201024790 六、發明說明： 【發明所屬之技術領域】 本發明涉及光學器件，具體涉及一種光學鏡頭元件及應用此 光學鏡頭元件的數碼相機模組。 【先前技術】 在數碼成像設備中，光學成像鏡頭是尤為重要的組件，鏡頭 的像質直接決定了數碼成像設備的成像性能。數碼產品不斷更新 換代’日趨向輕薄短小方向發展，因而對配備在數碼成像設備中 巧光學鏡頭有了越來越高的要求。特別是在百萬圖元以上的鏡頭 模組中二為了保證高的成像品質和亮度，達到足夠的視場角，數 ，成，系統需要較大的空間來屈折光線，往往採用增加鏡片的數 罝，採用高折射率低色散值的優質材質，或者採用非球面的面形 ，方法來校正象差’提高成像品f;這種產品長度遠遠達不到輕 :短小的要求’且單個鏡獅面形教為複雜；―方面從而增 j體積’另—方面不易加工成型’導致生產成本較高。 【發明内容】 <所欲解決之技術問題>201024790 VI. Description of the Invention: [Technical Field] The present invention relates to an optical device, and in particular to an optical lens element and a digital camera module to which the optical lens element is applied. [Prior Art] In digital imaging equipment, an optical imaging lens is a particularly important component, and the image quality of the lens directly determines the imaging performance of the digital imaging device. Digital products are constantly being updated, and the trend is becoming lighter and thinner. Therefore, there is an increasing demand for smart optical lenses equipped with digital imaging equipment. Especially in the lens module of more than one million yuan, in order to ensure high image quality and brightness, to achieve sufficient angle of view, number, and system, the system needs a large space to bend the light, often increasing the number of lenses.罝, using high-quality materials with high refractive index and low dispersion value, or using an aspherical surface shape to correct aberrations and improve imaging products f; this product is far from light: short requirements and a single mirror The lion face shape teaching is complicated; the aspect increases the j volume and the other is difficult to process and shape, resulting in higher production costs. SUMMARY OF THE INVENTION <Technical Problem to be Solved>
G 綠处所要解決之技術問題是克服現有技術的不足，提供-鏡正各種像差’總長短，體積小且易於加工成型的i學 <解決問題之技術手段> 方至iSii;的同===學鏡=，其自物 二表面 邊緣厚度大於等於零，包ί具ίί 方-側為平二與面向像方 透鏡，為塑, 201024790 的弧形的非球*的第 ^鄭包括具有*向物; 軸設光=之=:模紐，其包括:同 ❹ 出的弧形的非球面的第一 ^面物方且向物方一侧凸 弧狀凹陷形的非球面的第i表面;%且^于f方-侧為平 面的第三表面與面向;象:工=;=滑的弧狀凹陷形的非球 球面的第四表面;一第三透鏡，=:;，弧狀凹陷形的非 于像方-側為弧狀凹陷二==五表面與面向像方且相對 于於先刖技術的效果> ⑩ 透鏡之前’ίϋί:物J種JUS中的光闌位於第-呈平滑弧形，第三读#第一透鏡的第四表面的有效鏡面 f的承接其邊緣光線兄蛾，二得各個透鏡可以更 較之現有技術，該種来風在π專條件下（在相同焦距情況下） 大，故採用該種結構的相高較高，視場角更 減小鏡頭體積；第一透π件可以有效縮短鏡頭的總長、 時使球差降低，第三“凸=’可：有效減小場曲和像散·同 統的轴外像差，使邊緣視場更Hut主光線出射角，修正系 頭7L件可以對各象差， 也聚…、，故採用該種結構的光學鏡 另外，第三透鏡凸向2好得到較好的光學性 f鏡，且第三透鏡加%而在安f過程中劃傷第三 低，所以採用該種光學鏡頭^的中要 4 201024790 由於^作學鏡頭元件具有上财益縣，故細此 頭元件的數碼相機模組同樣具有上述效果。 兄 【實施方式】 &人為使i發明的目的、_方案及優點更加清楚明白，以下 =實施例’對本發明進行進—步詳細說明。應當理解， ^處所純的频實麵僅伽贿縣發明，並㈣於限 發明。 實施例一： 參 ❿ ^了圖所示，本發明實施例提供的一種光學鏡頭元件 方至像方触湖的轉第—魏i、第二 自物 第三透鏡之後;遽光片具 :===表面第:透第鏡==物方的第- 透鏡具有面向物方的第五表面及面 向像方的第/、表面，上:4六個表面均為非球面， 向物方-侧凸出的弧形’第二表面相對于像方—側為 凹陷形；所述第三表面相對于物方的—側為陷’第 形，所述第五表面為向物方一側凸出的弧形，第 方-侧為弧狀凹陷形;上述固定光閣可以設置第於、㈡2 施例中，固定光闌（圖中未示出）設置於第一透 上元件的數碼相機模組（未圖示），、包括」 像方依次排列的塑膠第-透鏡、第二透鏡和第三透 零’所述遽光片位於第三“之後;濾光;具j面工冗 面和面向像方的後表面，第一透鏡具有面向物方的第一表 5 201024790 向像方的第二表面，第_ 方的第四表®第具有面向物方的第三表面及面向像 側凸出的弧形第':5==::工表面為向物方- 五表面為向物方__側=面呈平滑弧形，·所述第 狀凹陷形。出的弧形，第，、表面相對于像方一側為弧 一透鏡與所述第二透鏡呈環抱狀。 小於π'/第-、sum散值大於5〇，第二透鏡的優選色散值 所述第五表面的優值可以減小系統色差，· 外像差，使可減小主絲㈣歸正系統_ 單個===弧=用:r設計，且鏡頭元件中的 加ΐ ί利正，得到了較好的_能，並且易於 ❿ 進-步地，所述光學鏡頭元件滿足以下條件： 1.15<L/f<1.3 ; 〇.8<fl/f<i.2 ; Q<0 且 U5<|f2/f]<z：2 ; l.l<f3/f<2.2 ; 、其中f為整個光學鏡頭元件的有效焦距值；統總長； 打為第-透鏡的有效焦距值；β為第二透鏡的有效焦距值^為 第-透鏡的有效焦距值；鏡頭元件總長及各透鏡有效焦距值之間 的關係的限n步驗了鏡頭的總長，並對各象差，進行良 201024790 好的矯正’得到了較好的光學性能。 其中’第-透鏡的材料為折射率<155,色散值>55的光學材 料（光學塑膠材質或玻璃材質），其中，本實施例中優選公知的塑 膠材料非晶型聚婦烴ZEONEX，折射率和色散值分別為ni = 1.53 ’ vl = 56 ;其第二透鏡的材料為折射率>157,色散值切的光 學材料（光學塑膝材質或玻璃材質），其中，本實施例中優選公知 ❹的轉材概碳咖旨pc，折神和色散值分為n2=i 585，心 29.5，·其第三透鏡的材料為折射率<155的光學材料，色散值別光 予塑膠材質或_材f ) ’其中，本實_巾優選公知的塑膠材料 非晶型聚烯煙ZE咖χ，折射率和色散值分別為心⑸，. 56。、上述寫明的優珊料其他符合上述要求的其他材料進行 替代，如可用公知的非晶型輯烴c〇c㈣換非晶型 等，這裏不再贅述。 ❹八慮光>14為-玻璃平板，玻璃平板的前後表面均鑛覆有一層 二2紅外截至義（IR—伽㈤㈣），以齡來自於被攝物反 、'、中的紅外光線，從而提高成像品質。 所述非球面的面形符合如下公式：The technical problem to be solved by G Green is to overcome the shortcomings of the prior art, to provide the same kind of aberrations, the total length, the small size and the ease of processing, the technical means of solving the problem, the same as iSii; === Mirror =, the thickness of the surface of the surface of the object is greater than or equal to zero, the package is ίί-the side is the flat two and the face-like lens, for the plastic, the curved non-spherical * of 201024790 includes *Direction; axis set light = = mold, which includes: the first surface of the arc-shaped aspherical surface of the same arc and the aspherical surface of the arc-shaped concave shape toward the object side Surface; % and ^ on the f-side of the plane of the third surface and the face; like: work =; = slippery arc-shaped concave aspherical surface of the fourth surface; a third lens, =:;, arc The shape of the concave shape is not the image side - the side is the arc-shaped depression two == five surface and the effect on the image side and relative to the prior art technology > 10 lens before 'ίϋί: the light of the J type JUS is located - in a smooth curved shape, the third reading # the effective surface f of the fourth surface of the first lens receives the edge ray brother moth, and the second lens can be compared with the prior art The wind is large under the π-specific condition (at the same focal length), so the phase height of the structure is higher, and the angle of view is smaller to reduce the lens volume; the first π-piece can effectively shorten the total length of the lens. , the ball difference is reduced, the third "convex = ' can be: effectively reduce the field curvature and astigmatism and the off-axis aberration, so that the edge field of view is more Hut main light exit angle, the correction head 7L can be The aberrations are also concentrated, so that the optical lens of this structure is used. In addition, the third lens is convexly 2 to obtain a better optical f-mirror, and the third lens is added with % and scratched during the process. Three low, so the use of this kind of optical lens ^ middle 4 201024790 Since the ^ lens element has Shangcaiyi County, the digital camera module with this head component has the same effect. Brother [Embodiment] & The purpose, the solution, and the advantages of the invention are more clearly understood, and the following is a detailed description of the present invention. It should be understood that the pure frequency of the invention is only invented by Gai County, and (4) limited invention. Embodiment 1: The present invention shows the present invention. An optical lens element is provided by the example to the side of the lake, the first one after the second lens, the second object, the second piece of the lens, the surface of the second lens, the surface of the lens: the surface of the surface: The lens has a fifth surface facing the object side and a surface/surface facing the image side, upper: 4 six surfaces are aspherical surfaces, and an arc-shaped second surface convex toward the object side is opposite to the image side a concave shape; the third surface is trapped in a shape opposite to the object side, the fifth surface is an arc convex toward the object side, and the first side is an arc-shaped concave shape; The fixed light cabinet may be provided with the digital camera module (not shown) provided in the first through element, in the embodiment of the second and second embodiments, including the plastics arranged in sequence. The first lens, the second lens, and the third zero-transmission' are located after the third "filtering; having a j-faced redundant surface and an image-facing rear surface, the first lens having an object-facing surface A table 5 201024790 to the second surface of the image side, the fourth table of the _ square, the third surface having the object-facing side and the curved surface facing the image side ': 5 == :: work surface to the object side - __ five of the object side surface of the arcuate = leaving it smooth, recess-like shape of the first. The curved shape, the front surface, and the surface are arcs with respect to the image side, and a lens is surrounded by the second lens. Less than π'/the first, the sum scatter value is greater than 5 〇, the preferred chromatic dispersion value of the second lens, the superior value of the fifth surface can reduce the system chromatic aberration, · the external aberration, so that the main wire (four) correction system can be reduced _ single ===arc = with: r design, and the crowning in the lens element is good, and a better _ energy is obtained, and it is easy to advance, the optical lens element satisfies the following conditions: 1.15<;L/f<1.3;〇.8<fl/f<i.2;Q<0 and U5<|f2/f]<z:2;l.l<f3/f<2.2; where f is The effective focal length value of the entire optical lens element; the total length; the effective focal length value of the first lens; β is the effective focal length value of the second lens ^ is the effective focal length value of the first lens; the total length of the lens element and the effective focal length value of each lens The limit of the relationship between the n steps of the total length of the lens, and the good correction of each aberration, good 201024790 'has better optical performance. The material of the 'first lens is an optical material (optical plastic material or glass material) having a refractive index < 155, a dispersion value > 55, wherein a well-known plastic material amorphous polyglycol ZEONEX is preferred in the present embodiment. The refractive index and the dispersion value are respectively ni = 1.53 ' vl = 56; the material of the second lens is a refractive index > 157, a dispersion-cut optical material (optical plastic knee material or glass material), wherein, in this embodiment Preferably, the conductive material of the known ❹ is carbon, the folding and dispersion values are divided into n2=i 585, the heart is 29.5, and the material of the third lens is an optical material having a refractive index < Material or material f) ' Among them, the actual material is preferably a well-known plastic material amorphous polyene smoked ZE curry, and the refractive index and dispersion value are respectively (5), 56. The above-mentioned other materials are replaced by other materials which meet the above requirements, such as the well-known amorphous type hydrocarbons c〇c (four) for amorphous type, etc., and will not be described herein. ❹八光光>14 is a glass plate, the front and back surfaces of the glass plate are covered with a layer of 2 infrared inversion (IR-gamma (five) (four)), from the infrared light of the object, Thereby improving the image quality. The aspherical surface conforms to the following formula:
其中：2 + OyT2 + c^r4 + a3r6 + a4rs + a5r10 + _ 4以各非球面與絲交點為起點，垂直光軸方向的轴 ^ J、、人曲面係數’e為鏡面中心曲率，e=1/R，其中R為鏡面 中心曲率半徑，r為 古 兄甸肀一度’ a卜a2、a3、a4、a5、a6為非 201024790 球面係數。 實施例二： 本發明所提供的第二實施例’為在實施例一的基礎上’進一步 提出了鏡頭組件的相關參數如下： 鏡片參數： 類型 曲率半徑 二次曲面係數 厚度 (R) (k) (dmm) 第一表面 0.725842533 0.219875 0.50 第二表面 1.443133123 8.019236 0.30 第三表面 -1.5434136 -0.013897 0.4 第四表面 -1.84331333 -3.237001 0.10 第五表面 0.453135433 -4.072578 0.55 第六表面 1.053436434 -1.999519 0.36 遽光片前表面 0.3 遽光片後表面 0.5222756 像面 0 非球面係數： 第一表面 a2 : 0，a4 : -0.545313533， a6 : 1. 044353543，a8 : -5. 86456842， al〇 : 22.4353121，al2 : 0 第二表面 a2 : 0，a4 : -0. 542135353， a6 : 24535212，a8 : -1. 24656545， 201024790 al〇 : 0 ， al2 : 0 第三表面 a2 : -〇· 05435433，a4 : -0. 255468633， a6 : -2. 212545325，a8 : 5. 046565331， alO : 23.43531365 ， al2 : 0 第四表面 a2 : 〇· 243564133，a4 : -1. 456521357， a6 : 1. 2124353533，a8 : 95435212， alO : 0.245432112 ， al2 : 0 ® 第五表面 a2 : 451312313，a4 : -G. 354512222， a6 : 0. 4535215345，a8 : -0. 21563532， alO ： 0.002435353 » al2 ： 0 第六表面 a2 : 243646533，a4 : -0. 854253315， a6 : 0· 1453535353，a8 : 0· 024353635， alO : -0.02343543，al2 : 〇 ©表中厚度d為此面距離下個面的距離，該鏡頭模組的總長 L-3.2mm，有效焦距值_2·657ιηιη，第一透鏡的有效焦距值 fl=2.6075mm，第二透鏡的有效焦距值^=_5 7211麵，第三透鏡的 有效焦距值f3=5.3474mm. 第二圖是本發明實施例二的光學鏡頭元件的調製傳遞函數 (Modulation Transfer Function，簡稱 MTF)曲線圖，圖中橫軸表 示空間頻率，單位··線對每毫米（lp/mm);縱抽表示調製傳遞函 數（MTF)的數值，所述MTF的數值用來評價鏡頭的成像品質， 取值範圍為0—1，MTF曲線越高越直表示鏡頭的成像品質越奸， 9 201024790 對真實圖像的還原能力越強。從圖2可以看出，各視場子午方向(τ) 和弧矢方向(S)方向的MTF曲線很靠近，其表明：該鏡頭元件在各 個視場，子午方向(T)和弧矢方向(s)這兩個方向的成像性能具有良 好的一致性，能保證鏡頭元件在整個成像面上都能清晰成像，而 不會出現中間清晰、邊緣模糊的情況。 第三圖和第四圖分別是本發明實施例二的光學鏡頭元件的場 曲和畸變圖，從第三圖和第四圖可以看出，該光學鏡頭元件的場 曲小於0.20mm，畸變小於2% ;能夠配合市場上主流的互補金屬 氧化物半導體（CMOS) /電荷藕合器件（charge Coupled Device， 簡稱CCD)影像感測器接收的要求。 因此本發明提供的實施例可以在縮短鏡頭總長的基礎上，確保 適當的後焦距，還可以對各象差，特別是非點象差和畸變象差進 行良好矯正，並得到理想的光學性能。 本發明所提供的第三實施例，為在實施例一的基礎上，進一步 k出了鏡頭組件的相關參數如下： 鏡片參數： 類型 曲率半徑 二次曲面係數 厚度 ----~--- (R) 00 (dmm) 第一表面 0.657258324 3.5894565 0.49 第一面 1.254786389 12.013356 0.58 201024790 第三表面 -1.52478968 5.01456912 0.32 第四表面 -1.75423656 -4.5748566 0.12 第五表面 0.578965228 -3.0145355 0.7 第六表面 0.755124528 -0.997392 0.35 濾、光片前表面 0.3 濾光片後表面 0.721399 像面 0 非球面係數： 第一表面 a2 : 0，a4 : -0. 25789542 a6 : 1.3009362 ， a8 : -8. 748264 alO : 30.681718，al2 : 0 第二表面：a2 : 0，a4 : -0. 514896235 a6 : -0.614896235，a8 : -1. 09836311 alO : 0 ， al2 : 0 第三表面：a2 : -0. 05418438，a4 : -0. 50172818 a6 : -2.9006379，a8 : 5. 7179354 alO : 36.342181 ， al2 : 0 第四表面：a2 : 0.1214719008，a4 : -1. 73149655 a6 : 1.9819229，a8 : -1.03512336 alO : 0. 78944427，al2 : 0 第五表面：a2 : -0. 154660372，a4 : -0· 253777899 11 201024790 a6 ： 0.349527749 * a8 ： -〇. 286400993 alO : 0.0058722231 ， a12 : 0 第六表面：a2 : -1. 50641184，a4 : 82481894 a6 : 0. 075128767，a8 : 0. 0176367374 alO :-0.01456542329，al2 : 0 表中厚度d為此面距離下個面的距離，該鏡頭模組的總長 L=3.5814mm ’有效焦距值f=2.86721mm,第一透鏡的有效焦距值 β fl=2.9377mm，第二透鏡的有效焦距值f2=_3,5054mm，第三透鏡的 有效焦距值£3=3.267mm。 第五圖是本發明實施例三的光學鏡頭元件的調製傳遞函數 (Modulation Transfer Function，簡稱 MTF)曲線圖，圖中橫軸表 示空間頻率，單位··線對每毫米（lp/mm);縱軸表示調製傳遞函 數（MTF)的數值，所述MTF的數值用來評價鏡頭的成像品質， 取值範圍為0—1 ’ MTF曲線越高越直表示鏡頭的成像品質越好， ® 對真實圖像的還原能力越強。從圖2可以看出，各視場子午方向(τ) 和弧矢方向(S)方向的MTF曲線报靠近，其表明：該鏡頭元件在各 個視場，子午方向(T)和弧矢方向(s)這兩個方向的成像性能具有良 好的一致性，能保證鏡頭元件在整個成像面上都能清晰成像，而 不會出現中間清晰、邊緣模糊的情況。 第六圖和第七圖分別是本發明實施例三的光學鏡頭元件的場 曲和畸變圖，從第六圖和第七圖可以看出，該光學鏡頭元件的場 曲小於0.10mm，畸變小於2% ;能夠配合市場上主流的互補金屬 12 201024790 ^化物半導體（CMOS) /電合器件（aiafgeQ)upledDeviee， 簡稱CCD)影像感測器接收的要求。 ，因此本發a月提供的實施例可以在縮短鏡頭總長的基礎上，確保 j田的後焦距’還可以對各象差，特別是非點象差和畸變象差進 行良好矯正，並得到理想的光學性能。 實施例四： θ本發明所提供的第四實施例，為在實施例-的基礎上，進一步 提出了鏡頭組件的相關參數如下： 鏡片茶數： 類型 曲率半徑 二次曲面係數 厚度 (R) (k) (dmm) 第一非球面 0.657258324 0.204142 0.62 第二非球面 1.254786389 -1.654257 0.71 第三非球面 -1.52478968 -130.0451332 0.32 第四非球面 -1.75423656 -6.512463 0.18 第五非球面 0.578965228 -13.210543 0.69 第六非球面 0.755124528 -3.246332 0.366 渡光片前表面 0.3 遽光片後表面 —----- 0.949275 像面 0 非球面係數： 13 201024790 第一表面 a2 : 0，a4 : -0. 35489646 a6 : 1. 425786235，a8 : -7. 2457863 alO : 25.453579 ， al2 : Ο 第二表面：a2 : 0，a4 : -0. 55245353 a6 : -0.54278934，a8 : -0. 98756312 alO : 0，al2 : 0 第三表面：a2 : 067854212，a4 ·· -0. 45789542 a6 : -2. 54861345，a8 : 6. 156548654 alO : 34. 214563，al2 : 0 第四表面：a2 : 0.1145786422，a4 : -1. 54789631 a6 : 2. 015456123，a8 : -1. 01245334 alO : 0.8147856712 ， al2 : 0 第五表面：a2 : -0· 134561233，a4 : -0. 30214521 a6 : 0· 401252323，a8 : -0. 25789456 alO ： 0.0012457312 » al2 ： 0 第六表面：a2 : -1. 452145321，a4 : -0. 65471563 a6 ： 0. 104312456 > a8 ： 0.025789542 alO : -0.015423456，al2 : 0 表中厚度d為此面距離下個面的距離，該鏡頭模組的總長 L=4. 08527mm，有效焦距值f=3. 52466mm，第一透鏡的有效焦距值 fl=3· 5074麵，第二透鏡的有效焦距值f2=-4. 5468mm，第三透鏡的 有效焦距值f3=4. 6202mm。 14 201024790 第八圖是本發明實施例四的光學鏡頭元件的調製傳遞函數 (Modulation Transfer Function，簡稱 MTF)曲線圖，圖中橫轴 表示空間頻率，單位：線對每毫米（lp/mm);縱軸表示調製傳遞 函數（MTF)的數值’所述MTF的數值用來評價鏡頭的成像品質， 取值範圍為0 — 1，MTF曲線越高越直表示鏡頭的成像品質越好， 對真實圖像的還原能力越強。從圖2可以看出，各視場子午方向 ⑩（T)和弧矢方向（S)方向的MTF曲線很靠近，其表明：該鏡頭元件 在各個視場，子午方向⑺和弧矢方向⑻這兩個方向的成像性能 具有良好的-致性，能保證鏡頭元件在整個成像面上都能清晰成 像，而不會出現中間清晰、邊緣模糊的情況。 第九圖和第十別是本發明實補四的光學件的場 曲和畸_，鄕九S和第十圖可以看出，該光學鏡頭元件的場 曲小於0.10mm，畸變小於2% ;能夠配合市場上主流的互補金屬氧 ❿=物半導體⑽s) /電荷藕合器件（Charge㈤細， 簡稱CCD)影像感測器接收的要求。 因此本發明提供的實施例可以在縮短鏡頭總長絲礎上，確 保適當的健距’财輯各象差，制是非縣差和崎變象差 進行良轉正’並得到理想的絲性能。 以上所述僅為本發明的較佳實施例而已，並不用以限制本發 、，凡在本發明的精神和原則之⑽作的任何修改、等同替換和 改進等’均應包含在本發明的保護範圍之内。 【圖式簡單說明】 15 201024790 H 光學鏡頭元件實施例—的光學元件結構示意圖。 弟一圖^本創錢學铜元件實施例二的光學鏡頭MTF (光學僂 遞函數）圖。 矛 第二圖為本創作光學鏡 第四圖為本創作光學鏡 第五圖為本創作光學鏡 遞函數）圖。 第六圖為本創作光學鏡 第七圖為本創作光學鏡 第八圖為本創作光學鏡 遞函數）圖。 頭元件實施例二的光學鏡頭場曲示意圖。 頭元件實施例二的光學鏡頭畸變示意圖。 頭元件實施例三的光學鏡頭MTF (光學傳Where: 2 + OyT2 + c^r4 + a3r6 + a4rs + a5r10 + _ 4 with the intersection of each aspherical surface and the silk as the starting point, the axis of the vertical optical axis direction J, and the human surface coefficient 'e is the mirror center curvature, e= 1/R, where R is the radius of curvature of the mirror center, and r is the ancient brother's degree once ab a2, a3, a4, a5, a6 are non-201024790 spherical coefficients. Embodiment 2: The second embodiment provided by the present invention is based on the first embodiment. Further, the relevant parameters of the lens assembly are as follows: Lens parameters: Type curvature radius Quadric coefficient thickness (R) (k) (dmm) First surface 0.725842533 0.219875 0.50 Second surface 1.443133123 8.019236 0.30 Third surface -1.5434136 -0.013897 0.4 Fourth surface - 1.84331333 -3.237001 0.10 Fifth surface 0.453135433 -4.072578 0.55 Sixth surface 1.053436434 -1.999519 0.36 Front surface of the glazing sheet 0.3 Rear surface of the calender sheet 0.5222756 Image plane 0 Aspheric coefficient: First surface a2 : 0, a4 : -0.545313533, a6 : 1. 044353543, a8 : -5. 86456842, al〇: 22.4353121, al2 : 0 Second surface A2 : 0,a4 : -0. 542135353, a6 : 24535212,a8 : -1. 24656545, 201024790 al〇: 0 , al2 : 0 Third surface a2 : -〇· 05435433,a4 : -0. 255468633, a6 : -2. 212545325,a8 : 5. 046565331, alO : 23.43531365 , al2 : 0 Fourth surface a2 : 〇· 243564133,a4 : -1. 456521357, a6 : 1. 2124353533,a8 : 95435212 , alO : 0.245432112 , al2 : 0 ® fifth surface a2 : 451312313, a4 : -G. 354512222, a6 : 0. 4535215345, a8 : -0. 21563532, alO : 0.002435353 » al2 : 0 sixth surface a2 : 243646533, A4 : -0. 854253315, a6 : 0· 1453535353, a8 : 0· 024353635, alO : -0.02343543,al2 : 〇© The thickness d in the table is the distance from the face to the next face. The total length of the lens module L- 3.2mm, effective focal length value _2·657ιηιη, effective focal length value of the first lens fl=2.6075mm, effective focal length value of the second lens ^=_5 7211 surface, effective focal length value of the third lens f3=5.3474mm. The figure is a modulation transfer function (MTF) curve of the optical lens element according to the second embodiment of the present invention, wherein the horizontal axis represents the spatial frequency, the unit·· line pair per mm (lp/mm); The value of the modulation transfer function (MTF), which is used to evaluate the imaging quality of the lens, and the value range is 0-1. The higher the MTF curve, the more accurate the image quality of the lens is. 9 201024790 For real images The stronger the ability to restore. It can be seen from Fig. 2 that the MTF curves of the meridional direction (τ) and the sagittal direction (S) of each field of view are very close, which indicates that the lens element is in each field of view, the meridional direction (T) and the sagittal direction ( s) The imaging performance in these two directions is in good agreement, ensuring that the lens elements can be clearly imaged over the entire imaging surface without the appearance of sharp edges and blurred edges. The third and fourth figures are respectively the field curvature and distortion diagram of the optical lens element according to the second embodiment of the present invention. As can be seen from the third and fourth figures, the field curvature of the optical lens element is less than 0.20 mm, and the distortion is less than 2%; can meet the requirements of the mainstream complementary metal oxide semiconductor (CMOS) / charge coupled device (CCD) image sensor on the market. Therefore, the embodiment provided by the present invention can ensure an appropriate back focus on the basis of shortening the total length of the lens, and can well correct various aberrations, particularly astigmatism and distortion, and obtain ideal optical performance. According to the third embodiment provided by the present invention, based on the first embodiment, the relevant parameters of the lens assembly are further as follows: Lens parameters: Type curvature radius Quadratic coefficient thickness----~--- ( R) 00 (dmm) First surface 0.657258324 3.5894565 0.49 First side 1.254786389 12.013356 0.58 201024790 Third surface -1.52478968 5.01456912 0.32 Fourth surface - 1.75423656 -4.5748566 0.12 Fifth surface 0.578965228 -3.0145355 0.7 Sixth surface 0.755124528 -0.997392 0.35 Filter, Front surface of the light sheet 0.3 Rear surface of the filter 0.721399 Image surface 0 Aspheric coefficient: First surface a2 : 0, a4 : -0. 25789542 a6 : 1.3009362 , a8 : -8. 748264 alO : 30.681718,al2 : 0 Surface: a2 : 0, a4 : -0. 514896235 a6 : -0.614896235,a8 : -1. 09836311 alO : 0 , al2 : 0 Third surface: a2 : -0. 05418438,a4 : -0. 50172818 a6 : - 2.9006379,a8 : 5. 7179354 alO : 36.342181 , al2 : 0 Fourth surface: a2 : 0.1214719008,a4 : -1. 73149655 a6 : 1.9819229,a8 : -1.03512336 alO : 0. 78944427,al2 : 0 :a2 : -0. 154660372,a4 : -0· 253777899 11 201024790 a6 : 0.349527749 * a8 : -〇. 286400993 alO : 0.0058722231 , a12 : 0 sixth surface: a2 : -1. 50641184,a4 : 82481894 a6 : 0 075128767,a8 : 0. 0176367374 alO :-0.01456542329,al2 : 0 The thickness d in the table is the distance from the face to the next face. The total length of the lens module is L=3.5814mm 'the effective focal length value f=2.86721mm, the first The effective focal length value of a lens is β fl = 2.9377 mm, the effective focal length value of the second lens is f2 = _3, 5054 mm, and the effective focal length value of the third lens is £ 3 = 3.267 mm. The fifth figure is a modulation transfer function (MTF) curve of the optical lens element according to the third embodiment of the present invention. In the figure, the horizontal axis represents the spatial frequency, and the unit is · line pair per millimeter (lp/mm); The axis represents the value of the modulation transfer function (MTF). The value of the MTF is used to evaluate the imaging quality of the lens. The value ranges from 0 to 1 'The higher the MTF curve, the better the image quality of the lens is better. The more the ability to restore the image. It can be seen from Fig. 2 that the MTF curves of the meridional direction (τ) and the sagittal direction (S) of each field of view are close, which indicates that the lens element is in each field of view, the meridional direction (T) and the sagittal direction ( s) The imaging performance in these two directions is in good agreement, ensuring that the lens elements can be clearly imaged over the entire imaging surface without the appearance of sharp edges and blurred edges. 6 and 7 are respectively a field curvature and a distortion diagram of the optical lens element according to Embodiment 3 of the present invention. As can be seen from the sixth and seventh figures, the field curvature of the optical lens element is less than 0.10 mm, and the distortion is smaller than 2%; able to match the requirements of the mainstream complementary metal on the market 12 201024790 ^ semiconductor (CMOS) / electrical components (aiafgeQ) upledDeviee, referred to as CCD) image sensor. Therefore, the embodiment provided in the month of the present invention can ensure that the back focal length of the field can be well corrected for various aberrations, especially astigmatism and distortion aberrations, on the basis of shortening the total length of the lens, and is ideally obtained. Optical performance. Embodiment 4: θ According to the fourth embodiment provided by the present invention, based on the embodiment, the relevant parameters of the lens assembly are further proposed as follows: Number of lenses: Type of curvature radius Quadratic coefficient thickness (R) ( k) (dmm) first aspheric surface 0.657258324 0.204142 0.62 second aspheric surface 1.254786389 -1.654257 0.71 third aspheric surface -1.52478968 -130.0451332 0.32 fourth aspheric surface - 1.75423656 -6.512463 0.18 fifth aspheric surface 0.578965228 -13.210543 0.69 sixth aspheric surface 0.755124528 -3.246332 0.366 Front surface of the light-passing sheet 0.3 Rear surface of the calender sheet ----- 0.949275 Image plane 0 Aspherical coefficient: 13 201024790 First surface a2 : 0, a4 : -0. 35489646 a6 : 1. 425786235, A8 : -7. 2457863 alO : 25.453579 , al2 : Ο Second surface: a2 : 0, a4 : -0. 55245353 a6 : -0.54278934,a8 : -0. 98756312 alO : 0,al2 : 0 Third surface: a2 : 067854212,a4 ·· -0. 45789542 a6 : -2. 54861345,a8 : 6. 156548654 alO : 34. 214563,al2 : 0 Fourth surface: a2 : 0.1145786422,a4 : -1. 54789631 a6 : 2. 015456123 , a8 : - 1. 01245334 alO : 0.8147856712 , al2 : 0 Fifth surface: a2 : -0· 134561233, a4 : -0. 30214521 a6 : 0· 401252323,a8 : -0. 25789456 alO : 0.0012457312 » al2 : 0 Sixth surface: A2 : -1. 452145321,a4 : -0. 65471563 a6 : 0. 104312456 > a8 : 0.025789542 alO : -0.015423456,al2 : 0 The thickness d in the table is the distance from the face to the next face, the lens module The total length L=4. 08527mm, the effective focal length value f=3. 52466mm, the effective focal length value of the first lens fl=3· 5074 face, the effective focal length value of the second lens f2=-4. 5468mm, the effective focal length of the third lens The value is f3=4. 6202mm. 14 201024790 The eighth figure is a modulation transfer function (MTF) curve of the optical lens element according to the fourth embodiment of the present invention, wherein the horizontal axis represents the spatial frequency, and the unit is: line pair per millimeter (lp/mm); The vertical axis represents the value of the modulation transfer function (MTF). The value of the MTF is used to evaluate the imaging quality of the lens. The value ranges from 0 to 1. The higher the MTF curve, the better the image quality of the lens is. The more the ability to restore the image. It can be seen from Fig. 2 that the MTF curves of the 10 (T) and sagittal (S) directions of the field of view are very close, which indicates that the lens element is in each field of view, the meridional direction (7) and the sagittal direction (8). The imaging performance in both directions is good, ensuring that the lens elements are clearly imaged across the entire imaging surface without the presence of sharp edges and blurred edges. The ninth and tenth aspects are the curvature of field and the distortion of the optical member of the fourth embodiment of the present invention. It can be seen that the field curvature of the optical lens element is less than 0.10 mm and the distortion is less than 2%; It can meet the requirements of the mainstream complementary metal oxide 物=material semiconductor (10)s)/charge-coupled device (Charge (referred to as CCD) image sensor. Therefore, the embodiment provided by the present invention can reduce the aberrations of the lens on the basis of the total length of the lens, and ensure that the aberrations and the slanting aberrations are good and the ideal silk performance is obtained. The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements, etc., which are made in the spirit and principle of the present invention, should be included in the present invention. Within the scope of protection. [Simple description of the drawing] 15 201024790 H Optical lens element embodiment - schematic diagram of the optical element structure. A picture of the optical lens MTF (optical transfer function) of the second embodiment of the present invention. The second picture is the creation of the optical mirror. The fourth picture is the creation of the optical lens. The fifth picture is the creation of the optical lens. The sixth picture is the creation of the optical mirror. The seventh picture is the creation of the optical lens. The eighth picture is the creation of the optical lens. The optical lens field curvature diagram of the second embodiment of the head element. Schematic diagram of optical lens distortion of the second embodiment of the head element. Optical lens MTF (optical transmission) of the third embodiment of the head element
頭元件實施例三的光學鏡頭場曲示意圖。 頭元件實施例三的光學鏡頭畸變示意圖。 頭元件實施例四的光學鏡頭MTF (光學傳 第九圖為本創作光學鏡 第十圖為本創作光學鏡 【主要元件符號說明】 頭元件實施例四的光學鏡頭場曲示意圖 頭元件實施例四的光學鏡頭畸變示意圖 I第一透鏡 2·第二透鏡 3.第三透鏡 4.濾光片The optical lens field curvature diagram of the third embodiment of the head element. Schematic diagram of optical lens distortion of the third embodiment of the head element. The optical lens MTF of the fourth embodiment of the head element (the ninth diagram of the optical transmission is the tenth figure of the creation optical mirror is the creation optical mirror [the main component symbol description] The fourth embodiment of the optical lens field curvature diagram head element embodiment four Optical lens distortion diagram I first lens 2 second lens 3. third lens 4. filter
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