200821620 九、發明說明： 【發明所屬之技術領域】 本發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200821620 IX. Description of the Invention: [Technical Field] The present invention relates to a plastic aspherical wide-angle photographic lens, and more particularly to an image suitable for use in an automobile as an image for increasing its visual range, and having an ultra-wide angle photographic angle and Wide-angle lens lens for vehicles with low manufacturing cost. [Prior Art] Press
身又鏡頭組係由複數透鏡所組成，目前常見的透鏡 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·· IP、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 透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 是破璃材質不耐高溫、不適合用於溫度變化太大的環境中， 但是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：PCCam、監視器及車用攝影 鏡頭等； 早期的鏡頭透鏡係採用球面設計，也就是任何一個切面 均呈圓形弧線的一部份，球面透鏡的優點係加工比較容易， 而能減少不良率的產生，但球面並非最適合的光學成像之透 鏡形狀，因為其會產生許多球面像差、軸上色散等光學缺 陷，導致影像模糊失焦，而為克服上述像差，需使用較多的 透鏡來補償，如此反而在鏡頭長度、外徑、重量及成本上均 200821620 增加不少，使鏡頭變得又大又沉重。因此乃有非球面透鏡的 發展’其可大幅提高成像品質，減少廣角鏡頭的桶狀變形， 且一片非球面透鏡更可替代多片球面透鏡的補償像差，進一 步能簡化鏡頭設計，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 乂成為最重要課通’也引發汽車後視系統（Car view System) 的商機’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。 本案發明人乃藉由多年從事相關產業的研發與製造經 驗，針對前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 成功的開發出一種塑膠非球面廣角攝影鏡頭，藉以克服現有 如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， 旎有效改善一般鏡頭容易失焦模糊的狀況。 本發明之次一目的係在於提供一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lx明之另目的係在於提供一種超精密非球面光學塑膠 鏡片所製成之塑膠非球面廣_影鏡頭。 可達成上述發明目的之塑膠非球面廣角攝影鏡頭，包括 200821620 有—個透鏡’分別定義為第一透鏡、第三透鏡與第三透鏡， 該第-、二及三透鏡係為非球面透鏡，其中第一透鏡兩侧具 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 表面係呈凸面狀，而第二表面係呈凹面狀，又第二透鏡兩側 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 像方之第二表面，且第―、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 能，並能降低其裝作成本，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 200821620 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 :透鏡⑴兩側具有-對應物方之第—表面⑴）及^應像 方之第二表面U2)’且第-表面⑴）係為大曲面半徑之凸球 ^丸而第二表面（12)係為小曲面半徑之凹球面鏡；其該塑膠 ·".、，，特殊聚碳酸酯（special pQlyCarbQnate咖⑷係光學透 ，塑膠，為使其能達到耐高;显185t，特別加入特殊配方 (special tusphenol p〇lyCarbonate)材料；而該第一透鏡 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 〇 且本發明之第-透鏡⑴之中心半徑值定義為⑻、鏡片 中心厚度定義為⑺、帛—透鏡⑴之焦距定義為（fi)，滿足 以下之條件： 10nnn<R<50nini 〇· 5 刪 < τ< 1· 5 mm • -4 < F1〈一5 A第-透鏡（2)為非球面透鏡，為塑膠材料所製成，又第 二透鏡⑵兩側分別具有—對應物方之第-表面（21)及-對 應像方之第二表面（22)，豆中第一砉 —— ，、丫乐录面（21)係呈凹面狀，而 第奢面（22)係呈凸面狀，其该塑膠之材質為特殊聚碳酸醋 (special PQlycarbonate resin)係光學透明塑膠，為使其能達 到财高溫185°c，特別加人特殊配s(speciai Msphen〇i 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： 200821620 1_ 5〈Nd<l. 6 50<Vd<60 。 該第一透鏡（1)之焦距（FI)與該第二透鏡（2)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（2)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（3)大小。 該第三透鏡（4)係設置於光圈（3)的光路之後，為塑勝材料 所製成，該第三透鏡（4)兩側分別具有一對應物方之第一表 面（41)及一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，其中對應物方之第一表面（41)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 特殊聚碳酸酯（special polycarbonate resin)係光學透明塑 膠，為使其能達到耐高溫185°C，特別加入特殊配方（special bisphenol poly carbonate)材料；該第三透鏡（4)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 〇 其中第二透鏡（2)與第三透鏡（4)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： 200821620 RY2 2 _________________ - 一—+ Αγ4 + BY6 + CY8 +DY10+ ΕΥ12 + FY14 + GY16 + HY18 + IY20 · (1-(1+K)R2Y2)1/2 其中R表示中心半徑； K表示錐度常數； Υ表示鏡片高度； _ Α表示四次的非球面係數； Β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； . Ε表示十二次的非球面係數； F表示十四次的非球面係數； G表示十六次的非球面係數； Η表示十八次的非球面係數； 籲 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，為一濾光 鏡。 成像平面（6)，該成像平面（6)置於平面鏡（5)之後，為鏡頭 組之成像之處。 藉由上述元件組成之廣角攝影鏡頭，其中總體有效焦距定 義為（EFL)，該第一透鏡（i)至成像平面（6)其感測器（SENSOR) 200821620 ‘ 表面距離（TTL)，滿足以下之條件： 1. 7mm<EFL<3mm 10mni<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。 φ 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、61 Onm、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 200821620 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。The body lens group is composed of a plurality of lenses. Currently, the common lenses include a plastic lens (glass) and a glass lens (glass). According to the different combinations of the lens materials, the lens group for the photographic lens is usually IP, 2P, 1G1P, 1G2P, 1G3P, 2G2P, 4G, 5G, 6G, etc. The more lenses used in the lens group, the more the cost high. The difference between the glass material and the plastic material lens is that the environment used is different. For example, the glass lens needs to be heated and molded to form an aspherical lens, and the mold, the mold core are manufactured, the maintenance cost is high, and the mass production is affected. The weight is also heavier than the plastic lens. However, the glass lens has better penetration and precision, and the temperature range is wider, but the glass material is not resistant to high temperature and is not suitable for use in environments with too much temperature change, but Since some derivative products do not need such high specifications, they can achieve good image effects, such as PCCam, monitors and car photographic lenses. The early lens lenses are spherical, that is, any one. The cut surfaces are all part of a circular arc. The advantages of the spherical lens are easier to process and reduce the generation of defective ratio, but the spherical surface is not the most suitable optical imaging lens shape because it produces many spherical aberrations and axes. Optical defects such as chromatic dispersion, resulting in image blur and out of focus, and in order to overcome the above aberrations, more lenses are needed to compensate, so The lens length, diameter, weight and cost are increased a lot 200821620, the lens becomes large and heavy. Therefore, there is a development of aspherical lenses, which can greatly improve the image quality, reduce the barrel deformation of the wide-angle lens, and an aspherical lens can replace the compensation aberration of the multiple spherical lenses, further simplifying the lens design and reducing its volume. And to reduce its weight; however, the current camera lens does not produce the ultra-precision aspheric optical plastic lens used in the vehicle image sensor lens group, and how to improve the driving visual dead angle becomes the most important lesson' also leads to the car rear view system. (Car view System) business opportunities' Therefore, if you can develop a vehicle image sensor lens using ultra-precision aspheric optical plastic lenses, you can reduce the use of precision spherical glass lenses, which can save the production cost of automotive photographic lenses. To improve the competitiveness of products. The inventor of this case, through years of experience in research and development and manufacturing of related industries, has explored the problem of the aspherical plastic lens without the aspherical lens, and actively sought solutions. After long-term efforts and research, the company successfully developed. A plastic aspherical wide-angle photographic lens is used to overcome the problems of high volume, poor image quality, and high cost if an aspherical glass lens is used. SUMMARY OF THE INVENTION The object of the present invention is to provide a plastic aspherical wide-angle photographic lens, which can effectively improve the situation in which a general lens is easily out of focus. A second object 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 lens made of an ultra-precision aspheric optical plastic lens. A plastic aspherical wide-angle photographic lens capable of achieving the above object, including 200821620, having a lens defined as a first lens, a third lens and a third lens, respectively, wherein the first, second and third lens systems are aspherical lenses, wherein The first lens has a first surface corresponding to the object side and a second surface corresponding to the image side, and the first surface is convex, and the second surface is concave, and the second lens has two sides respectively a first surface corresponding to the object side and a second surface corresponding to the image side, wherein the first surface is concave and the second surface is convex, and the two sides of the third lens respectively have a corresponding object a first surface and a second surface corresponding to the image side, and the first and second surfaces are convex, wherein a radius of curvature of the first surface of the corresponding object side is larger than a radius of curvature of the second surface of the corresponding image side; The lens of the 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 the functions of super wide angle and night vision, and can reduce the cost of the installation, and increase the additional 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 monitoring lens. Please refer to the figure shown in the first figure. The photographic lens is sequentially included from the object side to the image side. 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 first lens (1) is a bend The lunar lens is thicker and is a thick meniscus type 200821620 lens and is an aspherical lens made of optical plastic material. The first lens (1) has a corresponding surface-surface (1) on both sides. And the second surface U2)' and the first surface (1) are the convex spheres of the large curved surface radius and the second surface (12) is the concave spherical mirror of the small curved surface radius; the plastic &" .,,,Special polycarbonate (special pQlyCarbQnate coffee (4) is optically transparent, plastic, in order to achieve high resistance; 185t, specially added special tusphenol p〇lyCarbonate material; and the first lens Refractive index (Nd), Abbe number (Vd) meets the following Pieces: 1.5 < Nd < l.6 , * 50 < Vd < 60 〇 and the center-radius value of the first lens (1) of the present invention is defined as (8), the lens center thickness is defined as (7), and the focal length of the 帛-lens (1) is defined as ( Fi), satisfying the following conditions: 10nnn<R<50nini 〇· 5 &<τ< 1· 5 mm • -4 < F1<a 5 A-lens (2) is an aspherical lens, which is a plastic material The two sides of the second lens (2) respectively have a first surface (21) corresponding to the object side and a second surface (22) corresponding to the image side, and the first one in the bean, and the music recording surface ( 21) is concave, and the first dimension (22) is convex, and the plastic material is special PQlycarbonate resin, which is optically transparent plastic, so that it can reach a high temperature of 185 ° C. Specifically, a special s (speciai Msphen〇i polycarbonate) material is added; and the second lens (2) has a refractive index (10) and an Abbe number (Vd) satisfying the following conditions: 200821620 1_ 5<Nd<l. 6 50<Vd<lt; 60. The focal length (FI) of the first lens (1) and the focal length (F2) of the second lens (2), the focal length ratio (F1/F2), Sufficient conditions: 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 amount of light incident for adjusting the aperture of the wide-angle photographic lens (3) Size. 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) and a corresponding object on each side of the third lens (4). Corresponding to the second surface (42) of the image side, the aspherical optical lens having convex surfaces on both sides thereof, wherein the radius of curvature of the first surface (41) of the corresponding object side is larger than the curvature of the second surface (42) of the corresponding image side Radius; the plastic material is a special polycarbonate resin (transparent polycarbonate resin), in order to achieve high temperature resistance of 185 ° C, special bisphenol poly carbonate material is specially added; the third lens ( 4) wherein the refractive index (Nd) and the Abbe number (Vd) satisfy the following conditions: 1. 5 < Nd < L 6 50 < Vd < 60 〇 wherein the second lens (2) and the third lens (4) An aspherical lens, which corrects aberrations, shortens the optical total length of the lens, and reduces cost, which satisfies the following aspherical formula: 200821620 RY2 2 _________________ - One-+ Αγ4 + BY6 + CY8 +DY10+ ΕΥ12 + FY14 + GY16 + HY18 + IY20 · (1-(1+K)R2Y2)1/2 where R is in the middle Heart radius; K indicates taper constant; Υ indicates lens height; _ Α indicates four aspheric coefficients; Β indicates six aspheric coefficients; C indicates eight aspheric coefficients; and D indicates ten aspheric coefficients Ε denotes twelve aspheric coefficients; F denotes fourteen aspheric coefficients; G denotes sixteen aspheric coefficients; Η denotes eighteen aspheric coefficients; II denotes twenty times of non-spherical coefficients Spherical coefficient. A plane mirror (5), which is placed behind the third lens (4), is a filter. The imaging plane (6), which is placed behind the plane mirror (5), is where the lens group is imaged. A wide-angle photographic lens composed of the above elements, wherein the overall effective focal length is defined as (EFL), the first lens (i) to the imaging plane (6) and its sensor (SENSOR) 200821620 'surface distance (TTL), satisfying the following Conditions: 1. 7mm < EFL < 3mm 10mni < TTL < 20mm. Please refer to FIG. 2 to FIG. 10 together, which is a schematic diagram of the optical path of the wide-angle photographic lens for a vehicle of the present invention, and FIG. 2 to FIG. 10 are sequentially showing the light-angled center of the wide-angle photographic lens of the vehicle. The figure is shown in Fig. 10 is a schematic diagram of the super wide-angle optical path at 170 degrees. φ Please refer to FIG. 11 together, which is a schematic diagram of aberrations of the plastic aspherical wide-angle photographic lens of the present invention, which are aberration diagrams of wavelengths of 650 nm, 61 Onm, 555 nm, 550 nm, and 470 nm, respectively; , the spherical aberration of the wide-angle photographic lens of the present invention, the field curvature diagram; as shown in FIG. 13 , is a schematic diagram of the lateral chromatic aberration of the plastic aspherical wide-angle photographic lens of the present invention; as shown in FIG. A schematic diagram of the contrast of a plastic aspherical wide-angle photographic lens. Referring to FIG. 15 again, it is a schematic view of a wide-angle photographic lens of the present invention, which is a first lens (1), a second lens (2), an aperture (3), and a third embodiment of the present invention. 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) of the lens body (7) is sequentially arranged inwardly from the concave section (71) by a second 200821620 lens (2), an aperture (3), a third lens (4), and a concave section (73). ) Provide a fixed plane mirror (5). A threaded section (75) is provided outside the lens body (7); and the imaging plane (6) is located behind the plane mirror (5).
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 符合汽車影像感測系統對死角的改善，其視角設計可大於 150°，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： 1.由於-相關鏡頭設計皆為四〜六片光學球面玻璃透 鏡所組成，無法降織造成本，且限㈣光路設計 範圍，其往往無法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，非球面衫塑膠鏡片 並能承受nm:的溫度轉，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。 2.本發明之攝影鏡頭進—步能符合汽車影像感測系統 對死角的改善，其視角設計可大於i5G。，同時夜視 功能低於i LUX，而能提升夜間車行之安全。 12 200821620 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，並配合圖式及圖號，針對本發 明做進一步之說明，期能使貴審查委員對本發明有更詳細 的瞭解’惟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The invention can make the lens body (7) can be applied to the high temperature and high humidity environment of the automobile without the phenomenon of cracking of the coating film, and further conforms to the improvement of the dead angle of the automobile image sensing system, and the angle of view design thereof. Can be greater than 150°, while the night vision function is lower than} LUX, which can enhance the security of nighttime driving. It has super wide-angle and night vision functions, and can reduce the cost of its installation. It can reduce the use of precision spherical optical glass lenses to increase the optical path design. Flexible space. Through the foregoing technical means, the present invention can at least produce or enhance the following effects compared with the prior art: 1. Since the related lens design is composed of four to six optical spherical glass lenses, the weaving cost cannot be reduced, and Limit (4) The design range of the optical path, which often cannot 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 plastic lens can withstand the temperature transition of nm: not only improves the image quality, but also reduces the manufacturing cost. At the same time, it can extend its service life. 2. The photographic lens of the present invention can meet the improvement of the dead angle of the automobile image sensing system, and the viewing angle design can be larger than i5G. At the same time, the night vision function is lower than i LUX, which can improve the safety of night cars. 12 200821620 3. The invention adopts an aspherical optical plastic lens, which can reduce the use of precision spherical optical glass lenses, and can reduce the manufacturing cost, and can increase the elastic space of the optical path design. Next, a preferred embodiment will be described with reference to the drawings and the drawings, and the present invention will be further described, so that the reviewer can have a more detailed understanding of the present invention. The preferred embodiments of the invention are not intended to limit the invention in any way, so that
本發明之創作精神下，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。 綜上所述，可以理解到本發明為一創意極佳之創作，且 在相同的技術領域中未見相同或近似的產品創作戈公開使 用，同時具有功效的增進，故本發明已符合發明專利有關「新 :性」與「進步性」的要件，乃依法提出發明專利申請，祈 請早曰賜准本發明專利，至感德便。 月 【圖式簡單說明】 圖一為本發明之鏡片結構組成示意圖； 圖二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 200821620 圖七為本發明之鏡片光路示意圖（六）； 圖八為本發明之鏡片光路示意圖（七）； 圖九為本發明之鏡片光路示意圖（八）； 圖十為本發明之鏡片光路示意圖（九）； 圖十一為本發明之鏡片像差示意圖（65〇〜47〇nm); 圖十二為本發明之車用廣角攝影鏡頭之球差，場曲示咅圖 圖十三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角攝影鏡頭之相對照度示意圖 圖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 200821620 6成像平面 7鏡頭本體 71凹入段 72中孔 73内凹段 74結合段 75螺紋段 8端蓋Modifications or variations of any form of the invention are intended to be included within the scope of the invention. In summary, it can be understood that the present invention is an excellent creation, and the same or similar product creation is not disclosed in the same technical field, and the utility model has the advantages of improvement, so the invention has been in accordance with the invention patent. The requirements for "new: sexuality" and "progressiveness" are to file an invention patent application in accordance with the law, and pray that the invention patent will be granted as soon as possible. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the structure of a lens of the present invention; FIG. 2 is a schematic view of the optical path of the lens of the present invention; FIG. 2 is a schematic view of the optical path of the lens of the present invention (2); Schematic diagram of the optical path of the lens (3); Figure 5 is a schematic diagram of the optical path of the lens of the present invention (4); Figure 6 is a schematic diagram of the optical path of the lens of the present invention (5, 13,216,216,208 Figure 7 is a schematic diagram of the optical path of the lens of the present invention (6); The optical path of the lens of the invention (7); Figure 9 is a schematic diagram of the optical path of the lens of the present invention (8); Figure 10 is a schematic diagram of the optical path of the lens of the present invention (9); Figure 11 is a schematic diagram of the lens aberration of the present invention (65〇~ FIG. 12 is a spherical aberration of a wide-angle photographic lens for a vehicle according to the present invention. FIG. 13 is a schematic diagram of lateral chromatic aberration of a wide-angle photographic lens for a vehicle of the present invention. FIG. Schematic diagram of the contrast of the wide-angle photographic lens Fig. 15 is a schematic diagram of the photographic mirror combination of the present invention. ... [Main component symbol description] « 1 first lens 11 first surface 12 Two 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 200821620 6 imaging plane 7 lens body 71 concave section 72 hole 73 inner concave section 74 Combined section 75 threaded section 8 end cap
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