M398126 五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種廣岛 取車_彳纟#全 ' 見、，特別是指一種用於攝 取車輛後方畫面供駕敎參考的廣角鏡頭。 【先前技術】 車輛倒車時為了避免 後方車況，除了使用後視鏡、或是行車時判斷 外，目前# $ μ _ g /皮彳合配聲音警訊等方式 目别較新的—種方式是在 輛後方畫面供駕駛參考 更方“鏡項，攝取車 -種I3149Q6號專利的 廣角鏡碩及使用該廣角鏡頭之車輛裝置，勺 透鏡，前揭專利的視場角 、」匕3 場角度需求，因此，—^仍無法提供最佳的視 廣角鏡頭為目前市場所需以進一步提昇攝取畫面品質的 【新型内容】 因此，本新型之目的，即 面品質的廣角鏡頭。 ，、種可以提昇攝取畫 於是，本新型廣角鏡頭由物 透鏡、-第二透鏡、—第三诱=至像&依序包含一第― 鏡及-第六透鏡，依序為負、二正=透：、-第五透 ，-孔徑光闌位於該第三透鏡與第四透鏡間，：屈= 至第六透鏡"破璃材質，該第六透鏡為雙凸透鏡= 位置距離像端大於19毫 里 且視場角度大於160、…線與光轴的央角小於9。， 本新型透過第六透鏡為雙凸透鏡，控制出晴位置距雜 3 M398126 像端的出瞳距離大於19毫米，降低主光線（chief ray )與 光軸的夾角小於9 °，以提昇攝取畫面品質，此外本新型的 視場角度大於160。’滿足最佳的視場角度需求。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之三個較佳實施例的詳細說明中，將可 清楚的呈現。 在本新型被詳細描述之前，要注意的是，在以下的說 明内容中，類似的元件是以相同的編號來表示。 參閱圖1，本新型廣角鏡頭的校佳實施例由物端至像端 依序包含一第一透鏡1、一第二透鏡2、一第三透鏡3、一 第四透鏡4、一第五透鏡5,及一第六透鏡6，一孔徑光闌 7 (aperture stop)為中置光圈位於該第三透鏡3與第四透鏡 4間，用以提高廣角角度，光束通過該廣角鏡頭後通入平板 玻璃8 (cover glass)並成像於影像感測器9 (如ccd或 CMOS)。 邊第一透鏡1至第六透鏡6依序為負、負、正、負 正、正屈光率，且該第一透鏡丨至第六透鏡6皆為玻璃材 質，用以在環境溫度變化大的時候，仍能維持攝取書面。 質。 里〇α 該第一透鏡1為朝物端凸出的新 1 ^ ( negative meniscus lens)，提供主折射力以用於主導 式⑴： 導成像’滿足條件 2.2<L\R\/L\R2<4.\ 4 (1)M398126 V. New description: [New technical field] The new type is related to a wide-angle lens that is used to capture the rear view of the vehicle. [Prior Art] In order to avoid the rear car condition when the vehicle is reversing, in addition to using the rear view mirror or judging when driving, the current # $ μ _ g / skin 彳 配 声音 声音 声音 声音 声音 声音 声音 声音 — — — — In the rear picture, the driving reference is more "mirror item, the car-type I3149Q6 patent wide-angle lens and the vehicle device using the wide-angle lens, the scoop lens, the patented field of view angle," 匕3 field angle demand, therefore , -^ still can not provide the best wide-angle lens for the current market to further enhance the quality of the picture taken. Therefore, the purpose of this new type is the wide-angle lens of the surface quality. , the species can enhance the intake of the painting, then the novel wide-angle lens consists of an object lens, a second lens, a third lure = to image & sequentially comprising a first mirror and a sixth lens, sequentially negative, two positive = through:, - fifth through, - aperture stop is located between the third lens and the fourth lens,: flex = to the sixth lens " glass material, the sixth lens is lenticular lens = position distance image end is greater than 19 milliseconds and the field of view angle is greater than 160, the center angle of the line and the optical axis is less than 9. The novel lens is a lenticular lens through the sixth lens, and the exit distance of the image position of the hybrid lens is more than 19 mm, and the angle between the chief ray and the optical axis is less than 9 °, so as to improve the quality of the taken picture. In addition, the field of view of the present invention is greater than 160. 'To meet the best field of view angle needs. The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments of the accompanying drawings. Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals. Referring to FIG. 1 , a preferred embodiment of the wide-angle lens of the present invention includes a first lens 1 , a second lens 2 , a third lens 3 , a fourth lens 4 , and a fifth lens 5 from the object end to the image end. And a sixth lens 6, an aperture stop 7 (aperture stop) is a center aperture between the third lens 3 and the fourth lens 4 for increasing the wide angle, the light beam passes through the wide-angle lens and then enters the flat glass 8 (cover glass) and imaged on image sensor 9 (such as ccd or CMOS). The first lens 1 to the sixth lens 6 are sequentially negative, negative, positive, negative positive, and positive refractive power, and the first to sixth lenses 6 are all made of glass for large change in ambient temperature. At the time, I can still maintain the written intake. quality. The first lens 1 is a new 1 ^ (negative meniscus lens) that protrudes toward the object end, and provides a main refractive power for the dominant type (1): the guided image 'satisfies the condition 2.2 < L\R\/L\ R2<4.\ 4 (1)
Ll/?1為第一透鏡物端面S1半徑值，乙认2為第一透鏡 像端面S2半徑值，此外，該第一透鏡1滿足條件式⑺ 〇.56<Ll_JVrf/Ll/?2 為第一透鏡i的折射率，透過該第一透鏡！滿足 前述條件式（1)與（2)，達到改善像面畸變的功效。 該第二透鏡2為朝物端凸出的新月形，該第二透鏡2 滿足條件式（3 ): 〇<L2i?l/L2/?2<3.2 ( 3) 為第二透鏡物端面S3半徑值，為第二透鏡像 端面S4半徑值，透過該第二透鏡2滿足前述條件式（3)， 達到改善像面崎變的功效。 »亥第一透鏡3為雙凸透鏡（biconvex丨ens)，色散係數 J於#於20.2。δ亥第四透鏡4為雙凹透鏡（bic〇ncave Iens ) ’色散係數小於等於21。該第三透鏡；3與第四透鏡4用於 改善色像差。 邊第五透鏡5為雙凸透鏡，與第四透鏡4為複合透鏡 。忒第六透鏡6為雙凸透鏡，用於控制出瞳位置距離像端 的出瞳距離D大於19毫米。該第五透鏡5與第六透鏡6用 於降低主光線與光軸的夾角，在本較佳實施例令，透過該 第六透鏡6將經過該第四透鏡4、第五透鏡5的角度進一步 減小，讓主光線炎角（CRA，chief ray angle )小於9。。 該廣角鏡頭滿足條件式（4 ): 3.3<r〇L/y <4.2 (4) M398126 就為第-透鏡物端面S1至第六透鏡像端面⑴的鏡 頭總長度1為成料高，該第-透鏡^至第六透鏡6與孔 徑^闌7是配置為視場角度下限值為⑽。，出瞳距離d為 19 *米’本較佳實施例視場角度位於16G。與17G。間。此外 數值孔;L (F_number)卜於等於2〇，透過大口徑的設計 讓夜間低照度的條件下，也不降低攝取畫面品質。 <第—具體實施例〉 員的各式參數:Ll/?1 is the radius value of the first lens object end face S1, and B is the radius value of the first lens image end face S2. Further, the first lens 1 satisfies the conditional expression (7) 〇.56 <Ll_JVrf/Ll/? The refractive index of a lens i is transmitted through the first lens! The above conditional expressions (1) and (2) are satisfied, and the effect of improving the image plane distortion is achieved. The second lens 2 is a crescent shape convex toward the object end, and the second lens 2 satisfies the conditional expression (3): 〇 <L2i?l/L2/?2<3.2 (3) is the end surface of the second lens object The S3 radius value is the radius value of the second lens image end surface S4, and the second lens 2 satisfies the above conditional expression (3), thereby achieving the effect of improving the image surface roughness. The first lens 3 is a biconvex lens, and the dispersion coefficient J is #20.2. The fourth lens 4 of δH is a biconcave lens (bic〇ncave Iens) ’ dispersion coefficient is 21 or less. The third lens 3 and the fourth lens 4 are for improving chromatic aberration. The fifth lens 5 is a lenticular lens, and the fourth lens 4 is a compound lens. The sixth lens 6 is a lenticular lens for controlling the exit pupil distance from the image end to be greater than 19 mm. The fifth lens 5 and the sixth lens 6 are configured to reduce the angle between the chief ray and the optical axis. In the preferred embodiment, the angle of the fourth lens 4 and the fifth lens 5 is further transmitted through the sixth lens 6. Decrease, let the chief ray angle (CRA) be less than 9. . The wide-angle lens satisfies the conditional expression (4): 3.3 <r〇L/y <4.2 (4) M398126 The total length 1 of the lens of the first lens object end surface S1 to the sixth lens image end surface (1) is a high material. The first to sixth lenses 6 and 6 and the apertures 7 are arranged such that the lower limit of the field of view angle is (10). The exit pupil distance d is 19 * m. The preferred embodiment has a field of view angle of 16 G. With 17G. between. In addition, the numerical aperture; L (F_number) is equal to 2 〇, and the large-diameter design allows the low-illumination conditions at night to not reduce the picture quality. <First-Specific Embodiments> Various parameters of the staff:
M398126 S11 -9.733 4.00 ----- si至sn由物端至像端依序為該第一透鏡物端面si、 該第一透鏡像端面S2，以此類推至第六透鏡像端面S11， 其中，由於該第四透鏡4與第五透鏡5為複合透鏡，所以 該第四透鏡的像端面S8即為該第五透鏡的物端面，本第一 具體例中鏡頭總長度仍乙為12.15毫米，成像半高7為345 毫米’滿足條件式（1)至（4)，出瞳距離D為19毫米， 視場角度為160。。 圖2為表現非點像差的像場彎曲（field curvature)圖 ，表面不同高度的成像位置，丁代表子午光線，s代表弧矢 光線’橫座標為成像點到理想像面的距離，縱座標為理想 像向。圖3為表現歪曲像差的畸變（dist〇rti〇n)圖，表現 仏向放大率’橫座標為成像點到理想像點的百分比差，縱 座標為理想像高。圖4為倍率色像差圖，縱軸的最高成像 半南為80。。圖5為球面像差圖’其中瞳半徑（pupil radius )為0.5399毫米。根據圖2至圖5，非點像差、歪曲像差 、倍率色像差與球面像差並不嚴重。 圖6為不同像高時不同波長的光扇（ray fan )圖每一 像高具兩個光扇圖，分別對應子午面（tangential plane，ργ 與ΕΥ)與弧矢面（sagittai piane，pX與Εχ)的彗星像差 (coma aberrati〇n)表現，根據圖6，在大部分情況下的成 像放大率誤差值都在可接受的範圍内。 〈苐一具體貫施例〉 表2為該廣角鏡頭的各式參數： 7 M398126 表面序號 —-- S1 曲率半徑 (毫米） 厚度 (毫米） 折射率 Nd 12.024 0.70 1.7520 S2 2.980 1.90 S3 7.455 0.60 1.7540 S4 2.980 1.03 S5 27.736 1.60 1.9530 S6 -6.696 0.96 孔徑光闌 —— 1.41 S7 -18.266 0.60 1.9530 S8 4.323 2.00 1.6700 S9 -4.323 0.10 S10 10.492 1.80 1.8570 S11 -13.172 4.00 色散係數 ___ 53.50 45.68 19.90 19.99 62.25 46.57 本第二具體例中鏡頭總長度為12.69亳米，成像 高F為3.44毫米，滿足條件式（1)至（4)，出瞳距離d 19毫米，視場角度為16〇。。 ’ 圖7為表現非點像差的像場料圖，圖8 像差的畸變圖，圖9為倍率色像差 ，其中瞳半徑為_毫米，為球面㈣ 非點像差、歪曲像差、倍与 M398126 色像差、球面像差與彗星像差並不嚴重，在大部分情況下 的像差都在可接受的範圍内。 <第三具體實施例>M398126 S11 -9.733 4.00 ----- si to sn is sequentially from the object end to the image end, the first lens object end surface si, the first lens image end surface S2, and so on, to the sixth lens image end surface S11, wherein Since the fourth lens 4 and the fifth lens 5 are composite lenses, the image end surface S8 of the fourth lens is the object end surface of the fifth lens. In the first specific example, the total length of the lens is still 12.15 mm. The imaging half-height 7 is 345 mm' to satisfy conditional expressions (1) to (4), the exit pupil distance D is 19 mm, and the field of view angle is 160. . Figure 2 is a field curvature diagram showing astigmatism, imaging positions at different heights on the surface, din represents meridian ray, s represents sagittal ray 'horizontal coordinate', distance from imaging point to ideal image plane, ordinate For the ideal image. Figure 3 is a distortion (dist〇rti〇n) graph showing the distortion aberration, showing the 放大-magnification ‘the abscissa as the percentage difference from the imaging point to the ideal image point, and the ordinate is the ideal image height. Figure 4 is a magnification chromatic aberration diagram with the highest imaging half of the vertical axis being 80. . Figure 5 is a spherical aberration diagram where the pupil radius is 0.5399 mm. According to Figs. 2 to 5, astigmatism, distortion, magnification chromatic aberration, and spherical aberration are not serious. Figure 6 shows the ray fan diagrams of different wavelengths at different image heights. Each image has two illuminating fan images, corresponding to the tangential plane (ργ and ΕΥ) and the sagittal plane (sagittai piane, pX and Εχ). The comet aberration (coma aberrati〇n) performance, according to Figure 6, in most cases the imaging magnification error value is within an acceptable range. Table 2 shows the various parameters of the wide-angle lens: 7 M398126 Surface number—S1 Curvature radius (mm) Thickness (mm) Refractive index Nd 12.024 0.70 1.7520 S2 2.980 1.90 S3 7.455 0.60 1.7540 S4 2.980 1.03 S5 27.736 1.60 1.9530 S6 -6.696 0.96 aperture stop - 1.41 S7 -18.266 0.60 1.9530 S8 4.323 2.00 1.6700 S9 -4.323 0.10 S10 10.492 1.80 1.8570 S11 -13.172 4.00 Dispersion coefficient ___ 53.50 45.68 19.90 19.99 62.25 46.57 This second specific In the example, the total length of the lens is 12.69 mm, and the imaging height F is 3.44 mm, which satisfies the conditional formulas (1) to (4), the exit pupil distance d 19 mm, and the field of view angle is 16 〇. . Figure 7 is a field image showing astigmatism, Fig. 8 is a distortion diagram of the aberration, and Fig. 9 is a chromatic aberration of magnification, where the radius of the 瞳 is _ mm, which is spherical (four) astigmatism, distortion, The chromatic aberration, spherical aberration and coma aberration of the M398126 are not serious, and the aberration is in an acceptable range in most cases. <Third embodiment>
鏡頭的各式參數： 表3Various parameters of the lens: Table 3
S3 3.20 2.92 48.50 8.99 0.60 S4 S5 S6 2.98 13.29 6.31 1.9840 0.91 1.60 1.9330 44.68 0.85 19.50 孔徑光闌 1.29 S7 19.20 0.60 1.9130 20.10S3 3.20 2.92 48.50 8.99 0.60 S4 S5 S6 2.98 13.29 6.31 1.9840 0.91 1.60 1.9330 44.68 0.85 19.50 Aperture stop 1.29 S7 19.20 0.60 1.9130 20.10
S8 4.02 2.55 1.6570 S9 -4.02 0.10 61.55 S10 9.53 1.80 1.8377 S11 -20.90 4.00 53.57 本第三具體例中鏡頭總長度7OL為13.92毫米，成像半 高y為3.45毫米，滿足條件式（1)至（4)，出瞳距離d為 19毫米，視場角度為17〇°。 9 M398126 圖12為表現非點像差的像丨彎曲圖，_ i3為表現歪 曲像差的畸變圖，14為倍率色像差圖，_ 15為球面像 差圖’其中料㈣0.4136㈣，16為不同像高時不同 波長的光扇。根據圖12至圖16，非點像差、歪曲像差、 倍率色像差、球面像差與慧星像差並不嚴重，在大部分情 況下的像差都在可接受的範圍内。 综上所述’本新型的該第-透鏡i至第六透鏡6皆使 用玻璃材質，用以在環境溫度變化大的時候，仍能維持攝 取晝面品質’本新型的視場角度可達⑽。至nG。間，提供 最佳的視場角度需求，而透過出瞳距離D為19毫米，降低 主光線與光軸的夾角至9。以下，讓該影像感測器可以獲得 更佳的感光效率昇攝取晝面品質，故確實能達成本新 型的目的。 处惟以上所述者，僅為本新型的較佳實施例而已，當不 :以此限定本新型實施之範圍，即大凡依本新型申請專利 範圍及新型說明内容所作簡單的等效變化與修飾，皆仍屬 本新型專利涵蓋範圍内。 【圖式簡單說明】 圖1是一配置示意'圖，說明本新型廣角鏡頭—且 體實施例； /、 圖2是本第一具體實施例的非點像差的像場彎曲圖； 圖3是本第一具體實施例的歪曲像差的畸變圖； 圖4是本第一具體實施例的倍率色像差圖； 圓5是本第一具體實施例的球面像差圖； 10 M398126 圖6是本第一具體實施例的彗星像差的光扇圖； 圖7是本第二具體實施例的非點像差的像場彎曲圖； 圖8是本第二具體實施例的歪曲像差的畸變圖； 圖9是本第二具體實施例的倍率色像差圖； 圖10是本第二具體實施例的球面像差圖； 圖11是本第二具體實施例的彗星像差的光扇圖； 圖12是本第三具體實施例的非點像差的像場彎曲圖； 圖13是本第三具體實施例的歪曲像差的畸變圖； 圖14是本第三具體實施例的倍率色像差圖； 圖15是本第三具體實施例的球面像差圖；及 圖16是本第三具體實施例的彗星像差的光扇圖。 M398126 【主要元件符號說明】 1…… •…第一透鏡 S3…… …第二透鏡物端面 2…… •…第二透鏡 S4…… …第二透鏡像端面 3…… .…第三透鏡 S5…… …第三透鏡物端面 4…… …第四透鏡 S6…… …第三透鏡像端面 5…… •…第五透鏡 S7…… .…第四透鏡物端面 6…… •…第六透鏡 S8…… .…第四透鏡像端面 7…… •…孔徑光闌 S9…… .…第五透鏡像端面 8…… •…平板玻璃 S10 ··· •…第六透鏡物端面 9…… •…影像感測器 S11 ··· •…第六透鏡像端面 S1… •…第一透鏡物端面 D...... •…出瞳距離 S2.···. .....第 透鏡像Λτό面S8 4.02 2.55 1.6570 S9 -4.02 0.10 61.55 S10 9.53 1.80 1.8377 S11 -20.90 4.00 53.57 In the third specific example, the total lens length 7OL is 13.92 mm, and the imaging half height y is 3.45 mm, which satisfies the conditional formulas (1) to (4). The exit distance d is 19 mm and the field of view angle is 17 〇. 9 M398126 Fig. 12 is an image of a 丨 image showing astigmatism, _ i3 is a distortion diagram showing distortion, 14 is a chromatic aberration diagram of magnification, _ 15 is a spherical aberration diagram, and (4) 0.4136 (four), 16 Light fans of different wavelengths for different image heights. According to Figs. 12 to 16, the astigmatism, the distortion aberration, the chromatic aberration of magnification, the spherical aberration, and the comet aberration are not serious, and the aberration in most cases is within an acceptable range. In summary, the first lens to the sixth lens 6 of the present invention are all made of glass material, and can maintain the quality of the surface when the ambient temperature changes greatly. The angle of view of the novel field is up to (10) . To nG. In order to provide the best viewing angle requirement, the distance between the chief ray and the optical axis is reduced to 9 by the exit distance D of 19 mm. In the following, the image sensor can achieve better sensitization efficiency and higher quality of the enamel surface, so that this new type of object can be achieved. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, simple equivalent changes and modifications according to the scope of the new patent application and the new description. , are still covered by this new patent. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a wide-angle lens of the present invention, and a body embodiment; and FIG. 2 is an image field curvature diagram of the astigmatism of the first embodiment; FIG. Fig. 4 is a magnification chromatic aberration diagram of the first embodiment; the circle 5 is a spherical aberration diagram of the first embodiment; 10 M398126 Fig. 6 is a distortion diagram of the distortion aberration of the first embodiment; The illuminating fan image of the coma aberration of the first embodiment; FIG. 7 is a field curvature diagram of the astigmatism of the second embodiment; FIG. 8 is the distortion of the distortion aberration of the second embodiment. Figure 9 is a chromatic aberration diagram of magnification of the second embodiment; Figure 10 is a spherical aberration diagram of the second embodiment; Figure 11 is a blitz diagram of the coma aberration of the second embodiment. FIG. 12 is an image field curvature diagram of the astigmatism according to the third embodiment; FIG. 13 is a distortion diagram of the distortion aberration of the third embodiment; FIG. 14 is a magnification color of the third embodiment. FIG. 15 is a spherical aberration diagram of the third embodiment; and FIG. 16 is the third embodiment. Coma fan of light in FIG. M398126 [Description of main component symbols] 1... •...first lens S3.........second lens object end face 2...•...second lens S4...the second lens image end face 3...the third lens S5 ...the third lens object end face 4...the fourth lens S6......the third lens image end face 5...the fifth lens S7......the fourth lens object end face 6...the sixth lens S8...... The fourth lens is like the end face 7... • The aperture stop S9...... The fifth lens is the end face 8... •... Flat glass S10 ··· •...The sixth lens end face 9... ...image sensor S11 ···•...sixth lens image end face S1... •...first lens object end face D... •...out distance S2.···..... Mirror Λτό