1307780 九、發明說明： 、- 【發明所屬之技術領域】 „ 本电明係關於一種塑膠非球面廣角攝影鏡頭，特別是指 • 一種適用於汽車，作為增加其可視範圍之影像攝影，且具有超 廣角之攝影角度與低製造成本的車用廣角鏡頭鏡頭。 【先前技術】 按，一般鏡頭組係由複數透鏡所組成，目前常見的透鏡 φ 有塑膠材質透鏡（Plastic)和玻璃材質透鏡（Glass)兩種。而 依透鏡材質使用的不同搭配，通常攝影鏡頭用的鏡頭組構造 有：1卜 2P、1G1P、1G2P、1G3P、2G2P、4G、5G、6G 等， 透鏡組所用的透鏡越多，其成本越高。由於玻璃材質與塑膠 •材質的透鏡較大的不同點在於使用的環境不同，例如：玻璃 1鏡需經過升溫加模造而製成非球面鏡片，其模具、模仁之 ^製作、維護費用高且量產性受限，重量亦較塑膠鏡片重，然 f璃透鏡有較佳的穿透率與精度，且適用溫度範圍較廣，但 是f璃材質不耐高溫、不適合用於溫度變化太大的環境中， 疋由於某些的衍生性產品不需有如此高規格的產品下即 可達到不錯的影像效果’例如：PG Cam、監視器及車用攝影 鏡頭等； ~ 口早翊的鏡頭透鏡係採用球面設計，也就是任何一個切面 均:圓形弧線的一部份，球面透鏡的優點係加工比較容易， 而此減少不良率的產生，但球面並非最適合的光學成像之透 ★形狀因為其會產生許多球面像差、軸上色散等光學缺 導致I像;^糊失焦，而為克服上述像差，需使用較多的 '鏡來補償’如此反而在鏡頭長度、外徑、重量及成本上均 !3〇778〇 立曾力口 l ^'’使鏡頭變得又大又沉重。因此乃有非球面透鏡的 發展，甘 且 “可大幅提高成像品質，減少廣角鏡頭的桶狀變形， + i非球面透鏡更可替代多片球面透鏡的補償像差，進一 乂此簡化鏡頭設計’減小其體積與減輕其重量； 然目前攝影鏡頭並無生產車用影像感測器鏡頭組所使 用之超精密非球面光學塑膠透鏡，而如何改善駕駛視覺死角 7成為取重要課題，也引發汽車後視系統（Car Vi ew System) 、商機，因此，如能研發出使用超精密非球面光學塑膠鏡片 之車用影像感測器鏡頭，將可以減少精密球面玻璃鏡片的使 用，可以節省車用攝影鏡頭的製作成本，進而提高產品的競 爭力。 本案1發明人乃藉由多年從事相關產業的研發與製造經 ^針對别述車用攝影鏡頭無非球面塑膠透鏡的問題深入探 时’積極尋求解決之道’經過長期努力之研究與發展，終於 .的開發出種塑膠非球面廣角攝影鏡頭，藉以克服現有 :採用塑膠透鏡則體積大、成像品質差，以及如採用非球面 玻璃透鏡則成本高的問題。 【發明内容】 △本發明之目的即在於提供一種塑膠非球面廣角攝影鏡頭， 能有效改善一般鏡頭容易失焦模糊的狀況。 本發明之次-目的係在於提供—種塑膠非球面廣角攝影鏡 頭，具有加強使之有更廣角之攝影角度。 本發明之另一目的係在於提供-種超精密非球面光學塑膠 鏡片所製成之塑膠非球面廣角攝影鏡頭。 可達成上述發明目的之歸非球面廣肖攝影鏡頭，包括 1307780 有：三個透鏡，分別定義為第一透鏡、第三透鏡與第三透鏡， 〇第、一及二透鏡係為非球面透鏡，其中第一透鏡兩側具 有一對應物方之第一表面及一對應像方之第二表面，且第一 '矛面係呈凸面狀，而第二表面係呈凹面狀，又第二透鏡兩侧 *分別具有一對應物方之第一表面及一對應像方之第二表. 面’其中第一表面係呈凹面狀，而第二表面係呈凸面狀，再 者第三透鏡兩側分別具有一對應物方之第一表面及一對應 丨像方之第二表面，且第一、二表面均係呈凸面狀，其中對應 物方之第一表面的曲率半徑大於對應像方之第二表面的曲 ' 率半徑； . 藉此，讓本發明鏡頭可運用於汽車之高溫與高溼環境， 而不致發生透鏡之鍍膜膜裂的現象，且具有超廣角與夜視功 月b並鲍降低其裝作成本，而增加其附加價值，以增進產品 之競爭力及其經濟效益。 ’【實施方式】 本發明係一種用於汽車車用影像感測器或監視鏡頭之 塑膠非球面廣角攝影鏡頭，請配合參看第一圖所顯示者，該 攝影鏡頭從物方到像方依序包含有一第一透鏡（1)、一第二 透鏡（2)、光圈（3)、第三透鏡（4)、平面鏡（5)以及成像平面 (6)所構成； 第一透鏡（1) ’為彎月型透鏡，厚度較厚，為一厚彎月型 1307780 透鏡且為非球面透鏡，由光學性質之塑膠材料所製成，其中第 一透鏡⑴兩側具有-對應物方之卜表面⑴）及一對應像 方之第二表面(12)，且第一表面⑴)係為大曲面半徑之：球 面鏡’而第二表面（12)係為小曲面半徑之凹球面鏡，·其該塑膠 材料為特殊聚碳酸目旨（special pQlyearb鳴te如⑷係光學透 明塑膠’為使其能達到耐高s 185。〇，特別加入特殊配方 (special bisphenol p〇lycarbonate)材料；而該第—透鏡（ι) 其中之折射率（Nd)，阿貝數（Vd)滿足以下之條件： 1. 5<Nd<l. 6 ' 50<Vd<60 。 且本發明之第一透鏡⑴之中心半徑值定義為⑻、鏡片 中心厚度定義為⑺、第一透鏡⑴之焦距定義為⑽，滿足 以下之條件： 10nnn<R<50min 〇· 5 mm < T< 1. 5 刪 _ -4 < FI < -5 該第二透鏡（2)為非球面透鏡，為塑膠材料所製成，又第 二透鏡（2)兩側分別具有一對應物方之第一表面（21)及一對 應像方之第二表面(22)，其中第一表面(21)係呈凹面狀，而 第-表面（22)係呈凸面狀；其該塑滕之材質為特殊聚碳酸醋 (special p〇iycarbonate resin)係光學透明塑膠，為使其能達 到对尚溫185°C，特別加入特殊配方（special仏咖⑽】 polycarbonate)材料；而該第二透鏡⑵其中之折射率⑽），阿 貝數（Vd)滿足以下之條件·· 〜 8 1307780 1.5<Nd<l.6 50<Vd<60 〇 該第-透鏡⑴之焦距(F1)與該第二透鏡⑵之焦距 (F2) ’其焦距比（F1/F2)，滿足以下條件： 1 < -F2/F1< 3。 . 該光圈（3)係設置於第二透鏡⑵的光路之後適當處，用以 控制光線入射量’供調整該廣角攝影鏡頭之光圈⑶大小。 該第三透鏡⑷係設置於光圈（3)的光路之後，為塑膠材料 所製成’該第三透鏡⑷兩側分別具有—對應物方之第一表 面（41)及-對應像方之第二表面（42)，其兩側均為凸面之非 球面光學透鏡’其中對應物方之第—表面⑹的曲率半徑大 於對應像方之第二表面（42)的曲率半徑；而該塑膠之材質為 特殊聚碳M(special pQlyearb_te係光學透明塑 膠，為使其能達185t，特別加人特殊配方（聊如 biSPhen〇lpolycarbonate)材料；該第三透鏡⑷其中之折射率 (Nd)，阿貝數（Vd)滿足以下之條件： 1. 5<Nd<l. 6 50<Vd<60 。 其中第-透鏡（2)與第三透鏡⑷之非球面透鏡，藉此校正 像差、縮短鏡頭的光學總長及降低成本，其滿足以下非球面 公式： 1307780 RY2 z = + AY4 + BY6 + CY8 +DY1〇+ ευ12 + FY14 + GY16 + HY18 + IY2° (1-(1+K)R2Y2)1/2 .其中R表示中心半徑； K表示錐度常數； Υ表不鏡片而度； Α表示四次的非球面係數； B表示六次的非球面係數； C表示八次的非球面係數； D表示十次的非球面係數； E表示十二次的非球面係數； F表不十四次的非球面係數； G表示十六次的非球面係數； Η表不十八次的非球面係數； I表示二十次的非球面係數。 平面鏡（5)，該平面鏡（5)置於第三透鏡（4)之後，為〜濾光 成像平面⑻’該成像平面⑻置於平面鏡⑸之後，為鏡頭 組之成像之處。 ，其中總體有效焦距定 (6)其感測器（SENSOR) 藉由上述元件組成之廣肖攝影鏡頭 羲為（EFL)，該第一透鏡（υ至成像平面 1307780 表面距離（TTL)，滿足以下之條件： . 1.7mm<EFL<3mm . 10mm<TTL<20mm。 ^ 請一並參閱圖二至圖十所示，係本發明之車用廣角攝影鏡 頭之光路示意圖，圖二至圖十所示依序是該車用廣角攝影鏡頭 之光路由中心向外角度漸廣之示意，其中圖十是170度時之超 廣角光路示意圖。 • 請一並參閱圖十一所示，係本發明之塑膠非球面廣角攝影 鏡頭之像差示意圖，分別為波長650nm、610nm、555nm、550nm - 及470nm之像差示意圖；如圖十二所示，係本發明塑膠非球面 • 廣角攝影鏡頭之球差，場曲示意圖；如圖十三所示，係本發明 塑膠非球面廣角攝影鏡頭之橫向色差示意圖；如圖十四所示， 係本發明塑膠非球面廣角攝影鏡頭之相對照度示意圖。 請再參閱圖十五所示，係本發明之車用廣角攝影鏡頭的實 • 施例示意圖，將本發明之第一透鏡（1)、第二透鏡（2)、光圈（3)、 第三透鏡（4)及平面鏡（5)等依序組合於鏡頭本體（7)。 該鏡頭本體（7)前端至後端依序設置有凹入段（71)、中孔 (72)以及内凹段（73);該凹入段（71)供第一透鏡（1)置入並配合 端蓋（8)予與固定；凹入段（71)外為一突出之結合段（74)，此結 合段（74)本發明以螺紋為實施例，供端蓋（8)之内螺紋作螺合固 定。鏡頭本體（7)之中孔（72)由凹入段（71)向内依序組設第二 1307780 透鏡（2)、光圈（3)、第三透鏡（4)，於内凹段（73)提供固定平面 鏡（5) °鏡頭本體（7)之外設有螺紋段（75);另，成像平面（6) 則位於平面鏡（5)之後。 本發明於實際運用上可使鏡頭本體（7)能運用於汽車高 溫、高溼的環境，而不致發生鍍膜膜裂的現象，且進一步能 付δ况車衫像感測系統對死角的改善，其視角設計可大於 ，同時夜視功能低於！ LUX’而能提升夜間車行之安全 具有超廣角與夜視功能，並能降低其裝作成本可減少精密球 面光學玻璃鏡片使用，以增加光路設計之彈性空間。 且透過前述技術手段的展現，本發明相較於現有者至少 可產生或增進下列的功效： 由於一相 關鏡頭設計皆為四 〜六片光學球面玻璃透 鏡所組成，無法降低製造成本，且限㈣光路設計 範圍’其往往無S兼顧符合實際需求品質及價格。 而本發明鏡頭本體⑺的設計，係、採用非球面之塑膠 透鏡，可應用在高溫汽車上，非球面光學塑膠鏡片 絲承受说〜赃的溫度衝擊，不僅可提升成像 品質’且可降低製造成本，同時能延長其使用壽命。 攝影㈣進-步能符合汽車影像感測系統 對死角的改善，其視角設計可切15〇。，同時夜視 功能低於i LUX，而能提升夜間車行之安全。 12 2. 1307780 3·本發明採用非球面光學塑膠透鏡，可減少精密球面 光學玻璃鏡片使用，除前述降低製造成本外，並能 增加光路設計之彈性空間。 接下來舉一較佳實施例，並配合 w ^ ^ ^ 月做進—步之說明，期能使#審查委員對本發明有更詳細 的奢解I#以下所述者僅為用來解釋本發明之較佳實施例， 並非企圖據以對本發明做任何形式上之限制，是以，凡是在 本發月之創作精神下’而為本發明任何型式的修飾或變更， 皆仍應屬於本發明意圖保護之範疇。 综上所述，可以理解到本發明為—創意極佳之創作，且 在相同的技術領域中未見相同或近似的產品創作或公開使 用’同時具有功效的增進’故本發明已符合發明專利有關「新 賴性」與「進步性」的要件，乃依法提出發料财請，祈 睛早曰賜准本發明專利，至感德便。 【圖式簡單說明】 圖一為本發明之鏡片結構纽成示意圖； 圖一為本發明之鏡片光路示意圖（一） 圖二為本發明之鏡片光路示意圖（二） 圖四為本發明之鏡片光路示意圖（三） 圖五為本發明之鏡片光路示意圖（四） 圖六為本發明之鏡片光路示意圖（五 13 1307780 之鏡片先路示意圖（六); 之鏡片光路示意圖⑷; 之鏡片光路示意圖（八）； 之鏡片光路示意圖（九）； 圖七為本發明 圖八為本發明 圖九為本發明 圖十為本發明 1 + 4本發明之鏡片像差示意圖⑽〜酬m); ‘ 圖十二為本發明之車用廣角攝影鏡頭之球差 ，場曲示意圖；1307780 IX. Description of the invention: - (Technical field to which the invention belongs) „ This is a plastic aspherical wide-angle photographic lens, especially one that is suitable for use in automobiles, as an image for increasing its visual range, and has super Wide-angle lens and wide-angle lens for low-cost manufacturing. [Prior Art] Press, the general lens group consists of a plurality of lenses. The common lens φ is a plastic lens (glass) and a glass lens (Glass). According to the different combinations of the lens materials, the lens group used for the photographic lens is usually 1B 2G, 1G1P, 1G2P, 1G3P, 2G2P, 4G, 5G, 6G, etc. The more lenses used in the lens group, the cost The higher the difference between the glass material and the plastic material, the different environments are used. For example, the glass 1 mirror needs to be heated and molded to make an aspherical lens, and the mold and mold are manufactured and maintained. High and mass production is limited, and the weight is also heavier than plastic lenses. However, the glass lens has better penetration and precision, and the applicable temperature range is higher. Wide, but the material of f glass is not resistant to high temperature, and is not suitable for use in environments with too much temperature change. 疋Because some derivative products do not need such high specification products, good image effects can be achieved'. For example: PG Cam , monitors and car photographic lenses, etc.; ~ The lens lens of the early mouth is spherical, that is, any one of the cut surfaces: a part of the circular arc, the advantage of the spherical lens is easier to process, and this is not easy to reduce The rate is generated, but the spherical surface is not the most suitable shape for optical imaging. Because it will produce many spherical aberrations, axial dispersion and other optical defects, the I image will be produced; the paste will be out of focus, and in order to overcome the above aberrations, it is necessary to use More 'mirror to compensate' so on the lens length, outer diameter, weight and cost! 3 〇 〇 曾 曾 曾 l ^ l ^ ^ ^ l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l l Development, and "can greatly improve the image quality, reduce the barrel deformation of the wide-angle lens, + i aspheric lens can replace the compensation aberration of multiple spherical lenses, further simplify the lens design' to reduce its body And to reduce its weight; however, the current camera lens does not produce ultra-precision aspheric optical plastic lenses used in the car image sensor lens group, and how to improve the driving visual dead angle 7 becomes an important issue, and also causes the car rear view system ( Car Vi ew System), business opportunities, therefore, the development of automotive image sensor lenses using ultra-precision aspheric optical plastic lenses, can reduce the use of precision spherical glass lenses, can save the cost of production of automotive photographic lenses To improve the competitiveness of products. The inventor of this case 1 has been engaged in research and development and development of non-spherical plastic lenses for automotive photography cameras for many years. The development of a plastic aspherical wide-angle photographic lens to overcome the existing problems: the use of plastic lenses is bulky, poor image quality, and the cost of using aspherical glass lenses is high. SUMMARY OF THE INVENTION The object of the present invention is to provide a plastic aspherical wide-angle photographic lens that can effectively improve the situation in which a general lens is easily out of focus. The second objective of the present invention is to provide a plastic aspherical wide-angle photographic lens having a photographic angle that is enhanced to provide a wider angle. Another object of the present invention is to provide a plastic aspherical wide-angle photographic lens made of an ultra-precision aspheric optical plastic lens. An aspherical photographic lens capable of achieving the above object, comprising 1307780 having: three lenses, respectively defined as a first lens, a third lens and a third lens, wherein the first, first and second lens systems are aspherical lenses, The first lens has a first surface corresponding to the object side and a second surface corresponding to the image side, and the first 'spray surface is convex, and the second surface is concave, and the second lens has two The side* has a first surface corresponding to the object side and a second surface corresponding to the image side. The surface of the first surface is concave, and the second surface is convex, and the two sides of the third lens are respectively a first surface having a corresponding object side and a second surface corresponding to the image side, and the first surface and the second surface are both convex, wherein a radius of curvature of the first surface of the corresponding object side is greater than a second surface of the corresponding image side The curvature radius of the surface; thereby, the lens of the present invention can be applied to the high temperature and high humidity environment of the automobile without causing cracking of the coating film of the lens, and has a super wide angle and a night vision power b and abalone reduction. It is installed as a cost, and it is increased Add value to enhance the competitiveness of products and economic benefits. '[Embodiment] The present invention relates to a plastic aspherical wide-angle photographic lens for an automobile vehicle image sensor or a surveillance lens. Please refer to the figure shown in the first figure. The photographic lens is from the object side to the image side. The first lens (1) is composed of a first lens (1), a second lens (2), a diaphragm (3), a third lens (4), a plane mirror (5), and an imaging plane (6); The meniscus lens is thicker and thicker. It is a thick meniscus type 1307780 lens and is an aspherical lens made of optical plastic material. The first lens (1) has a surface corresponding to the object side (1). And a second surface (12) corresponding to the image side, and the first surface (1) is a large curved surface radius: a spherical mirror 'the second surface (12) is a concave spherical mirror with a small curved surface radius, and the plastic material is Special polycarbonate (special pQlyearb ming te such as (4) is an optically transparent plastic 'to achieve high resistance s 185. 〇, specially added special bisphenol p〇lycarbonate material; and the first lens (ι) Among them, refractive index (Nd), Abbe number (Vd The following conditions are satisfied: 1. 5 < Nd < l. 6 ' 50 < Vd < 60 . And the center lens value of the first lens (1) of the present invention is defined as (8), the lens center thickness is defined as (7), and the first lens (1) The focal length is defined as (10), and the following conditions are satisfied: 10nnn<R<50min 〇· 5 mm <T< 1. 5 __4 < FI < -5 The second lens (2) is an aspherical lens The second surface (2) has a first surface (21) corresponding to the object side and a second surface (22) corresponding to the image side, wherein the first surface (21) is formed by the plastic material. The concave surface and the first surface (22) are convex; the plastic material of the plastic is a special p〇iycarbonate resin, which is optically transparent plastic, so that it can reach a temperature of 185 ° C. Specially added special formula (special 仏 ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( 50 < Vd < 60 〇 the focal length (F1) of the first lens (1) and the focal length (F2) of the second lens (2) 'the focal length ratio (F1/F2), Under conditions sufficient to: 1 < -F2 / F1 < 3. The aperture (3) is disposed at an appropriate position after the optical path of the second lens (2) for controlling the incident amount of light to adjust the size of the aperture (3) of the wide-angle photographic lens. The third lens (4) is disposed behind the optical path of the aperture (3) and is made of a plastic material. The third lens (4) has a first surface (41) corresponding to the object side and a corresponding image side. a surface (42) having an aspherical optical lens having convex surfaces on both sides thereof, wherein a radius of curvature of the first surface (6) of the corresponding object side is larger than a radius of curvature of the second surface (42) of the corresponding image side; and the material of the plastic material It is a special polycarbon M (special pQlyearb_te is an optically transparent plastic, in order to make it up to 185t, special special formula (such as biSPhen〇lpolycarbonate) material; the third lens (4) which refractive index (Nd), Abbe number (Vd) satisfies the following conditions: 1. 5 < Nd < l. 6 50 < Vd < 60. wherein the aspherical lens of the first lens (2) and the third lens (4), thereby correcting aberrations and shortening the optics of the lens Total length and cost reduction, which satisfies the following aspheric formula: 1307780 RY2 z = + AY4 + BY6 + CY8 +DY1〇+ ευ12 + FY14 + GY16 + HY18 + IY2° (1-(1+K)R2Y2)1/2 . Where R is the center radius; K is the taper constant; Υ is not the lens; Α indicates four Aspherical coefficient; B represents six aspherical coefficients; C represents eight aspherical coefficients; D represents ten aspherical coefficients; E represents twelve aspherical coefficients; F represents not fourteen non-spherical Spherical coefficient; G represents the aspherical coefficient of sixteen times; 非 indicates the aspherical coefficient of not eighteen times; I represents the aspherical coefficient of twenty times. The plane mirror (5), the plane mirror (5) is placed in the third lens ( 4) After that, for the filter imaging plane (8)', the imaging plane (8) is placed after the plane mirror (5), where the lens group is imaged. The overall effective focal length is set (6) its sensor (SENSOR) by the above components The composition of the photographic lens is (EFL), the first lens (υ to the imaging plane 1307780 surface distance (TTL), meets the following conditions: . 1.7mm < EFL < 3mm . 10mm < TTL < 20mm. ^ Please Referring to FIG. 2 to FIG. 10, it is a schematic diagram of the optical path of the wide-angle photographic lens for a vehicle according to the present invention, and FIG. 2 to FIG. 10 are sequentially showing the outward angle of the optical routing center of the wide-angle photographic lens for the vehicle. , Figure 10 is the super wide-angle light at 170 degrees Fig. 11 is a schematic diagram showing the aberrations of the plastic aspherical wide-angle photographic lens of the present invention, which are aberration diagrams of wavelengths of 650 nm, 610 nm, 555 nm, 550 nm - and 470 nm, respectively; The figure shows the spherical aberration of the plastic aspherical surface of the present invention, and the field curvature diagram; as shown in FIG. 13, the transverse color difference diagram of the plastic aspherical wide-angle photographic lens of the present invention; as shown in FIG. A schematic diagram of the relative contrast of the plastic aspherical wide-angle photographic lens of the present invention. Referring to FIG. 15 again, it is a schematic view of a practical embodiment of a wide-angle photographic lens for a vehicle according to the present invention. The first lens (1), the second lens (2), the aperture (3), and the third embodiment of the present invention are shown. The lens (4) and the plane mirror (5) are sequentially combined in the lens body (7). The front end to the rear end of the lens body (7) are sequentially provided with a concave section (71), a middle hole (72) and a concave section (73); the concave section (71) is placed for the first lens (1) And the end cover (8) is fixed and fixed; the concave section (71) is a protruding joint section (74), and the joint section (74) is threaded as an embodiment for the internal thread of the end cover (8) Screwed and fixed. The hole (72) in the lens body (7) is sequentially arranged inwardly from the concave section (71) by a second 1307780 lens (2), an aperture (3), a third lens (4), and a concave section (73). ) Provide a fixed plane mirror (5) ° Threaded section (75) is provided outside the lens body (7); in addition, the imaging plane (6) is located behind the plane mirror (5). The practical application of the invention enables the lens body (7) to be applied to a high-temperature, high-humidity environment of the automobile without causing cracking of the coating film, and further capable of improving the dead angle of the sweater-like sensing system. The angle of view design can be greater than, while the night vision function is lower than! LUX' enhances the safety of nighttime vehicles with ultra-wide angle and night vision, and reduces the cost of installation to reduce the use of precision spherical optical glass lenses to increase the flexibility of the optical path design. Through the foregoing technical means, the present invention can at least produce or enhance the following effects compared with the prior art: Since a related lens design is composed of four to six optical spherical glass lenses, the manufacturing cost cannot be reduced, and the limit is limited to (4) The design range of the optical path 'it often has no S to meet the actual demand quality and price. The lens body (7) of the present invention is designed by using an aspherical plastic lens, which can be applied to a high temperature automobile, and the aspherical optical plastic lens wire can withstand the temperature shock of the 赃, which can not only improve the image quality but also reduce the manufacturing cost. At the same time, it can extend its service life. Photography (4) Step-by-step can meet the car image sensing system. For the improvement of the dead angle, the angle of view design can be cut 15 times. At the same time, the night vision function is lower than i LUX, which can improve the safety of night cars. 12 2. 1307780 3. The invention adopts an aspherical optical plastic lens, which can reduce the use of the precision spherical optical glass lens, and can reduce the manufacturing cost in addition to the above, and can increase the elastic space of the optical path design. Next, a preferred embodiment is given, and with the description of w ^ ^ ^ months, the reviewer can make the invention more detailed and luxurious. I# The following is only for explaining the present invention. The preferred embodiment is not intended to limit the invention in any way, so that any modification or modification of any type of the invention in the spirit of the present invention should still belong to the invention. The scope of protection. In summary, it can be understood that the present invention is an innovative creation, and the same or similar product creation or public use is not seen in the same technical field, and the invention has been in compliance with the invention patent. The requirements for "new reliance" and "progressiveness" are based on the fact that the publication of the invention is based on the law, and it is imperative to grant the patent for the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a lens structure of the present invention; FIG. 1 is a schematic view of a lens optical path of the present invention (1). FIG. 2 is a schematic view of a lens optical path of the present invention. Schematic (3) Figure 5 is a schematic diagram of the optical path of the lens of the present invention. (VI) Figure 6 is a schematic diagram of the optical path of the lens of the present invention (figure 1 (1) of the lens of the 5 13 1307780; schematic diagram of the optical path of the lens (4); Figure 9 is a schematic view of the lens of the present invention. Figure 9 is a schematic view of the lens aberration of the invention according to the present invention. Figure 10 is a schematic diagram of the aberration of the lens of the present invention (10)~ The spherical aberration of the wide-angle photographic lens for a vehicle of the present invention is a schematic diagram of a field curvature;
圖十二為本發明之車用廣角攝影鏡頭之橫向色差示意圖； 圖十四為本發明之車用廣㈣影鏡頭之相㈣度示意圖； ⑮十五為本發明之攝影鏡組合實施示意圖。 【主要元件符號說明】 1第一透鏡 11第一表面 12第二表面 2第二透鏡 21第一表面 22第二表面 3光圈 4第三透鏡 41第一表面 42第二表面 5平面鏡 14 1307780 6成像平面 7鏡頭本體 71凹入段 72中孔 73内ώ段 74結合段 75螺紋段12 is a schematic diagram of lateral chromatic aberration of a wide-angle photographic lens for a vehicle according to the present invention; FIG. 14 is a schematic diagram showing a phase (four) degree of a wide (four) photographic lens for a vehicle according to the present invention; [Main element symbol description] 1 first lens 11 first surface 12 second surface 2 second lens 21 first surface 22 second surface 3 aperture 4 third lens 41 first surface 42 second surface 5 plane mirror 14 1307780 6 imaging Plane 7 lens body 71 recessed section 72 in the hole 73 in the inner section 74 combined section 75 thread section