TWI678571B

TWI678571B - Five-piece optical lens system with a wide field of view

Info

Publication number: TWI678571B
Application number: TW108112413A
Authority: TW
Inventors: 黃靖昀; Ching-Yun Huang
Original assignee: 新鉅科技股份有限公司; Newmax Technology Co.,Ltd.
Priority date: 2019-04-10
Filing date: 2019-04-10
Publication date: 2019-12-01
Also published as: TW202037956A

Abstract

本發明為一種五片式廣角鏡片組，由物側至像側依序為：一具有負屈折力的第一透鏡、光圈、一具有正屈折力的第二透鏡、一具有負屈折力的第三透鏡、一具有正屈折力的第四透鏡、以及一具有負屈折力的第五透鏡；其中該第二透鏡物側表面的曲率半徑為R3，該第二透鏡像側表面的曲率半徑為R4，該五片式廣角鏡片組的整體焦距為f，該第一、二、四透鏡的焦距分別為f1、f2、f4，並滿足下列條件：1.9公厘＜ f+(R3+R4)/(R3-R4)＜ 2.9公厘且-2.0公厘＜ f1/(f2*f4)＜-1.2公厘，藉此，本發明則提供一種具廣視角、具高解析能力、短鏡頭長度、小歪曲的五片式廣角鏡片組。The present invention is a five-piece wide-angle lens group, which in order from the object side to the image side are: a first lens having a negative refractive power, an aperture, a second lens having a positive refractive power, and a first lens having a negative refractive power. Three lenses, a fourth lens with a positive refractive power, and a fifth lens with a negative refractive power; wherein the curvature radius of the object-side surface of the second lens is R3, and the curvature radius of the image-side surface of the second lens is R4 The overall focal length of the five-piece wide-angle lens group is f, and the focal lengths of the first, second, and fourth lenses are f1, f2, and f4, respectively, and satisfy the following conditions: 1.9 mm <f + (R3 + R4) / (R3 -R4) <2.9 mm and -2.0 mm <f1 / (f2 * f4) <-1.2 mm, by which the present invention provides a wide viewing angle, high resolution, short lens length, and small distortion Five-piece wide-angle lens group.

Description

Five-piece wide-angle lens group

本發明係與五片式廣角鏡片組有關，特別是指一種應用於電子產品上的小型化五片式廣角鏡片組。 The invention relates to a five-piece wide-angle lens group, in particular to a miniaturized five-piece wide-angle lens group applied to electronic products.

隨著智慧型手機及平板電腦等高規格行動裝置的發展，高畫質的小型攝影鏡頭已是標準配備，又隨著網路社群的流行，越來越多人喜歡拍照或自拍後與別人分享，又有如遊戲機、行車紀錄器、保全攝影機鏡頭等對拍攝角度需求也越來越大，因此對於鏡頭拍攝角度與畫質的要求也越來越嚴格。習知US 8335043、US 8576497使用2鏡片群，5~6片來達到大角度目的，然其歪曲(distortion)太大，而如US 8593737、US8576497、US 8395853，其最大視場角(FOV)均小於85度，且鏡頭組的總長度(TL)也都太長。 With the development of high-standard mobile devices such as smart phones and tablets, high-quality small-sized photographic lenses have become standard equipment. With the popularity of the Internet community, more and more people like to take pictures or take selfies with others For sharing, there are more and more demands for shooting angles, such as game consoles, driving recorders, and security camera lenses, so the requirements for lens shooting angles and picture quality are becoming stricter. It is known that US 8335043 and US 8576497 use 2 lens groups and 5-6 lenses to achieve a large angle. However, the distortion is too large. For example, US 8593737, US8576497, and US 8395853 have maximum FOVs. Less than 85 degrees, and the total length (TL) of the lens group is too long.

其次，運用在生醫、行車記錄器、攝影機或其他電子產品的攝影鏡頭，其大光圈的要求不需過於嚴苛，反而是畫角及鏡頭長度等需求才是業者需要進一步解決的問題所在，而目前的傳統搭載於前述領域中的電子產品上的攝影鏡頭，多採用四片式透鏡結構為主，皆具有畫角不足及使鏡頭長度過長等缺陷。 Secondly, the use of photographic lenses for biomedical, driving recorders, cameras or other electronic products does not require excessively large apertures. Rather, the requirements such as the angle of view and the length of the lens are the problems that the industry needs to solve further. At present, the conventional traditional photographic lenses mounted on electronic products in the aforementioned fields mostly adopt four-piece lens structures, and all have defects such as insufficient picture angle and excessively long lens lengths.

是以，如何開發出一種具廣視角、高解析能力、短鏡頭長度、小歪曲的廣角鏡片組，即是本發明研發的動機。 Therefore, how to develop a wide-angle lens group with a wide viewing angle, high resolution, short lens length, and small distortion is the motive of the invention.

本發明之目的在於提供一種五片式廣角鏡片組，尤指一種具廣視角、具高解析能力、短鏡頭長度、小歪曲的五片式廣角鏡片組。 The purpose of the present invention is to provide a five-piece wide-angle lens group, in particular a five-piece wide-angle lens group with a wide viewing angle, high resolution, short lens length, and small distortion.

緣是，為了達成前述目的，依據本發明所提供之一種五片式廣角鏡片組，包含一光圈和一由五片透鏡所組成的光學組，由物側至像側依序為：一第一透鏡，具有負屈折力，該第一透鏡的物側表面與像側表面至少一表面為非球面；該光圈；一第二透鏡，具有正屈折力，該第二透鏡的物側表面近光軸處為凸面，該第二透鏡的像側表面近光軸處為凸面，該第二透鏡的物側表面與像側表面至少一表面為非球面；一第三透鏡，具有負屈折力，該第三透鏡的物側表面近光軸處為凸面，該第三透鏡的像側表面近光軸處為凹面，該第三透鏡的物側表面與像側表面至少一表面為非球面；一第四透鏡，具有正屈折力，該第四透鏡的物側表面近光軸處為凹面，該第四透鏡的像側表面近光軸處為凸面，該第四透鏡的物側表面與像側表面至少一表面為非球面；以及一第五透鏡，具有負屈折力，該第五透鏡的物側表面近光軸處為凸面，該第五透鏡的像側表面近光軸處為凹面，該第五透鏡的物側表面與像側表面至少一表面為非球面，該第五透鏡的物側表面及像側表面至少一表面具有至少一反曲點；其中該第二透鏡物側表面的曲率半徑為R3，該第二透鏡像側表面的曲率半徑為R4，該五片式廣角鏡片組的整體焦距為f，該第一透鏡的焦距為f1，該第二透鏡的焦距為f2，該第四透鏡的焦距為f4，並滿足下列條件：1.9公厘<f+(R3+R4)/(R3-R4)<2.9公厘且-2.0公厘<f1/(f2*f4)<-1.2公厘。 The reason is that, in order to achieve the foregoing object, a five-piece wide-angle lens group provided according to the present invention includes an aperture and an optical group composed of five lenses. The order from the object side to the image side is: a first A lens having a negative refractive power, at least one of the object-side surface and the image-side surface of the first lens is an aspheric surface; the aperture; a second lens having a positive refractive power, and the object-side surface of the second lens is near the optical axis Is a convex surface, the image side surface of the second lens is convex near the optical axis, at least one of the object side surface and the image side surface of the second lens is aspherical; a third lens has a negative refractive power, and the first lens The object side surface of the three lenses is convex at the near optical axis, the image side surface of the third lens is concave at near optical axis, and at least one of the object side surface and the image side surface of the third lens is aspheric; a fourth The lens has a positive refractive power, and the object-side surface of the fourth lens is concave at the near optical axis, the image-side surface of the fourth lens is convex at the near-optical axis, and the object-side surface and the image-side surface of the fourth lens are at least One surface is aspherical; and a fifth lens With a negative refractive power, the object-side surface of the fifth lens is convex at the near-optical axis, the image-side surface of the fifth lens is concave at the near-optical axis, and at least one of the object-side surface and the image-side surface of the fifth lens is An aspheric surface, at least one surface of the object-side surface and the image-side surface of the fifth lens has at least one inflection point; The curvature radius of the object-side surface of the second lens is R3, the curvature radius of the image-side surface of the second lens is R4, the overall focal length of the five-piece wide-angle lens group is f, and the focal length of the first lens is f1. The focal length of the second lens is f2, and the focal length of the fourth lens is f4, which satisfies the following conditions: 1.9 mm <f + (R3 + R4) / (R3-R4) <2.9 mm and -2.0 mm <f1 / (f2 * f4) <-1.2 mm.

較佳地，其中該五片式廣角鏡片組的整體焦距為f，該第一透鏡的焦距為f1，並滿足下列條件：-0.68<f/f1<-0.26。藉此，讓第一透鏡折射力維持在適當範圍，並使該五片式廣角鏡片組的畫角(FOV)維持在適當角度，同時降低第一透鏡的組裝感度。Preferably, the overall focal length of the five-piece wide-angle lens group is f, the focal length of the first lens is f1, and the following conditions are satisfied: -0.68 <f / f1 <-0.26. Thereby, the refractive power of the first lens is maintained in an appropriate range, and the angle of view (FOV) of the five-piece wide-angle lens group is maintained at an appropriate angle, while reducing the assembly sensitivity of the first lens.

較佳地，其中該第三透鏡、第四透鏡與第五透鏡的合成焦距為f345，該五片式廣角鏡片組的整體焦距為f，並滿足下列條件：-13.0 ＜ f345/f ＜ 28.5。藉此，使該五片式廣角鏡片組物側端及像側端的屈折力配置有助於滿足較佳的像差平衡以及小型化的需求。Preferably, the combined focal length of the third lens, the fourth lens, and the fifth lens is f345, and the overall focal length of the five-piece wide-angle lens group is f, and the following conditions are satisfied: -13.0 <f345 / f <28.5. As a result, the configuration of the flexion forces on the object-side and image-side ends of the five-piece wide-angle lens group helps to meet the requirements of better aberration balance and miniaturization.

較佳地，其中該第二透鏡與第三透鏡的合成焦距為f23，該第四透鏡與第五透鏡的合成焦距為f45，並滿足下列條件：0.29 ＜ f23/f45 ＜ 0.87。藉此，可有利於獲得廣泛的畫角(視場角)及有效修正像面彎曲。Preferably, the combined focal length of the second lens and the third lens is f23, the combined focal length of the fourth lens and the fifth lens is f45, and the following conditions are satisfied: 0.29 <f23 / f45 <0.87. Thereby, it can be beneficial to obtain a wide picture angle (field of view angle) and effectively correct image plane curvature.

較佳地，其中該第一透鏡的焦距為f1，該第二透鏡、第三透鏡、第四透鏡與第五透鏡的合成焦距為f2345，並滿足下列條件：-4.0 ＜ f1/f2345 ＜ -1.6。藉此，當f1/f2345滿足前述關係式，則可令該五片式廣角鏡片組在具備大畫角，同時解像能力顯著提昇，反之，若超出上述光學式之數據值範圍，則會導致該五片式廣角鏡片組之性能、解像力低，以及良率不足等問題。Preferably, the focal length of the first lens is f1, and the combined focal length of the second lens, the third lens, the fourth lens, and the fifth lens is f2345, and the following conditions are satisfied: -4.0 <f1 / f2345 <-1.6 . With this, when f1 / f2345 satisfies the aforementioned relationship, the five-piece wide-angle lens group can have a large picture angle, and at the same time, the resolution can be significantly improved. Conversely, if it exceeds the above-mentioned optical data range, it will cause The five-piece wide-angle lens group has problems such as low performance, low resolution, and insufficient yield.

較佳地，其中該第一透鏡像側表面的曲率半徑為R2，該第一透鏡的焦距為f1，並滿足下列條件：-19.6 ＜ R2/f1＜ 6.7。藉此，使該五片式廣角鏡片組具有低長度、大光圈和遠近景成像品質兼顧之性能。Preferably, the curvature radius of the image-side surface of the first lens is R2, the focal length of the first lens is f1, and the following conditions are satisfied: -19.6 <R2 / f1 <6.7. As a result, the five-piece wide-angle lens group has a combination of low length, large aperture, and far-field and near-field imaging quality.

較佳地，其中該第一透鏡像側表面的曲率半徑為R2，該第一透鏡物側表面的曲率半徑為R1，並滿足下列條件：-34.6 ＜ R2/R1 ＜ 13.5。藉此，使該五片式廣角鏡片組具備大視角功能，以及滿足小型化的需求。Preferably, the curvature radius of the image-side surface of the first lens is R2, and the curvature radius of the object-side surface of the first lens is R1, and the following conditions are satisfied: -34.6 <R2 / R1 <13.5. Therefore, the five-piece wide-angle lens group is provided with a large viewing angle function and meets the demand for miniaturization.

較佳地，其中該第四透鏡物側表面的曲率半徑為R7，該第四透鏡像側表面的曲率半徑為R8，並滿足下列條件：2.2 ＜ R7/R8 ＜ 17.8。藉此，可平衡第四透鏡面形，增加該五片式廣角鏡片組的對稱性，以維持較佳的成像品質。Preferably, the curvature radius of the object-side surface of the fourth lens is R7, and the curvature radius of the image-side surface of the fourth lens is R8, and satisfies the following conditions: 2.2 <R7 / R8 <17.8. Thereby, the fourth lens surface shape can be balanced, and the symmetry of the five-piece wide-angle lens group can be increased to maintain better imaging quality.

較佳地，該第四透鏡於光軸上的厚度為CT4，該第五透鏡於光軸上的厚度為CT5，並滿足下列條件：1.3 ＜ CT4/CT5 ＜ 3.8。藉此，進一步使該五片式廣角鏡片組小型化。Preferably, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, and the following conditions are satisfied: 1.3 <CT4 / CT5 <3.8. Thereby, the five-piece wide-angle lens group is further miniaturized.

較佳地，其中該第一透鏡的物側表面至成像面於光軸上的距離為TL，該五片式廣角鏡片組的整體焦距為f，並滿足下列條件：1.9 ＜ TL/f ＜ 3.35。藉此，可有利於獲得廣泛的畫角(視場角)及有利於維持該五片式廣角鏡片組的小型化，以搭載於輕薄的電子產品上。Preferably, the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and the overall focal length of the five-piece wide-angle lens group is f, and the following conditions are satisfied: 1.9 <TL / f <3.35 . Thereby, it can be beneficial to obtain a wide picture angle (field of view) and to maintain the miniaturization of the five-piece wide-angle lens group for mounting on thin and light electronic products.

較佳地，其中該第一透鏡的物側表面至成像面於光軸上的距離為TL，該五片式廣角鏡片組在成像面可擷取的成像高度為IMH，並滿足下列條件：1.3 ＜ TL/IMH ＜ 2.3。藉此，可在縮減該五片式廣角鏡片組的體積與增大成像面面積之間取得平衡。Preferably, the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and the imaging height that the five-piece wide-angle lens group can capture on the imaging plane is IMH, and satisfies the following conditions: 1.3 <TL / IMH <2.3. Thereby, a balance can be achieved between reducing the volume of the five-piece wide-angle lens group and increasing the area of the imaging surface.

較佳地，其中該第五透鏡的像側表面至成像面於光軸上的距離為BFL，該第一透鏡的物側表面至成像面於光軸上的距離為TL，並滿足下列條件：0.14 ＜ BFL/TL ＜ 0.27。藉此，可在縮減該五片式廣角鏡片組的體積與增大成像面面積之間取得平衡。Preferably, the distance from the image-side surface of the fifth lens to the imaging surface on the optical axis is BFL, and the distance from the object-side surface of the first lens to the imaging surface on the optical axis is TL, and satisfies the following conditions: 0.14 <BFL / TL <0.27. Thereby, a balance can be achieved between reducing the volume of the five-piece wide-angle lens group and increasing the area of the imaging surface.

較佳地，其中該第二透鏡的色散係數為V2，該第三透鏡的色散係數為V3，並滿足下列條件：30＜ V2-V3＜ 42。藉此，可使第二透鏡與第三透鏡相互搭配以減少該五片式廣角鏡片組的色差。Preferably, the dispersion coefficient of the second lens is V2, and the dispersion coefficient of the third lens is V3, and the following conditions are satisfied: 30 <V2-V3 <42. Thereby, the second lens and the third lens can be matched with each other to reduce the chromatic aberration of the five-piece wide-angle lens group.

較佳地，其中該第四透鏡的色散係數為V4，該第五透鏡的色散係數為V5，並滿足下列條件：30＜ V4-V5＜ 42。藉此，可使第四透鏡與第五透鏡相互搭配以減少該五片式廣角鏡片組的色差。Preferably, the dispersion coefficient of the fourth lens is V4, and the dispersion coefficient of the fifth lens is V5, and the following conditions are satisfied: 30 <V4-V5 <42. Thereby, the fourth lens and the fifth lens can be matched with each other to reduce the chromatic aberration of the five-piece wide-angle lens group.

有關本發明為達成上述目的，所採用之技術、手段及其他之功效，茲舉七較佳可行實施例並配合圖式詳細說明如後。Regarding the technology, means, and other effects adopted by the present invention to achieve the foregoing objectives, seven preferred feasible embodiments are described in detail below with reference to the drawings.

＜第一實施例＞<First Embodiment>

請參照圖1A及圖1B，其中圖1A繪示依照本發明第一實施例之五片式廣角鏡片組的示意圖，圖1B由左至右依序為第一實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖1A可知，五片式廣角鏡片組係包含有一光圈100和一光學組，該光學組由物側至像側依序包含第一透鏡110、第二透鏡120、第三透鏡130、第四透鏡140、第五透鏡150、紅外線濾除濾光元件160、保護玻璃170、以及成像面180，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈100設置在該第一透鏡110與第二透鏡120之間。Please refer to FIG. 1A and FIG. 1B, wherein FIG. 1A shows a schematic diagram of a five-piece wide-angle lens group according to the first embodiment of the present invention, and FIG. 1B is a five-piece wide-angle lens group of the first embodiment in order from left to right. Curved and distorted narrowing of the image plane. It can be seen from FIG. 1A that the five-piece wide-angle lens group includes an aperture 100 and an optical group. The optical group sequentially includes the first lens 110, the second lens 120, the third lens 130, and the fourth lens from the object side to the image side. The lens 140, the fifth lens 150, the infrared filter element 160, the protective glass 170, and the imaging surface 180. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 100 is disposed between the first lens 110 and the second lens 120.

該第一透鏡110具有負屈折力，且為塑膠材質，其物側表面111近光軸190處為凹面，其像側表面112近光軸190處為凹面，且該物側表面111及像側表面112皆為非球面。The first lens 110 has a negative refractive power and is made of plastic. The object-side surface 111 is concave near the optical axis 190, the image-side surface 112 is concave near the optical axis 190, and the object-side surface 111 and the image side are concave. The surfaces 112 are all aspheric.

該第二透鏡120具有正屈折力，且為塑膠材質，其物側表面121近光軸190處為凸面，其像側表面122近光軸190處為凸面，且該物側表面121及像側表面122皆為非球面。The second lens 120 has a positive refractive power and is made of plastic. The object-side surface 121 of the second lens 120 is convex near the optical axis 190, the image-side surface 122 of the second lens 120 is convex near the optical axis 190, and the object-side surface 121 and the image side The surfaces 122 are all aspheric.

該第三透鏡130具有負屈折力，且為塑膠材質，其物側表面131近光軸190處為凸面，其像側表面132近光軸190處為凹面，且該物側表面131及像側表面132皆為非球面。The third lens 130 has a negative refractive power and is made of plastic. The object-side surface 131 is convex near the optical axis 190, the image-side surface 132 is concave near the optical axis 190, and the object-side surface 131 and the image side The surfaces 132 are all aspherical.

該第四透鏡140具有正屈折力，且為塑膠材質，其物側表面141近光軸190處為凹面，其像側表面142近光軸190處為凸面，且該物側表面141及像側表面142皆為非球面。The fourth lens 140 has a positive refractive power and is made of plastic. The object-side surface 141 is concave near the optical axis 190, the image-side surface 142 is convex near the optical axis 190, and the object-side surface 141 and the image side The surfaces 142 are all aspheric.

該第五透鏡150具有負屈折力，且為塑膠材質，其物側表面151近光軸190處為凸面，其像側表面152近光軸190處為凹面，且該物側表面151及像側表面152皆為非球面，且該物側表面151及該像側表面152至少一表面具有至少一反曲點。The fifth lens 150 has a negative refractive power and is made of plastic. Its object-side surface 151 is convex near the optical axis 190, its image-side surface 152 is concave near the optical axis 190, and the object-side surface 151 and the image side The surface 152 is an aspheric surface, and at least one surface of the object-side surface 151 and the image-side surface 152 has at least one inflection point.

該紅外線濾除濾光元件170為玻璃材質，其設置於該第五透鏡150及成像面180間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 170 is made of glass and is disposed between the fifth lens 150 and the imaging surface 180 without affecting the focal length of the five-piece wide-angle lens group.

上述各透鏡的非球面的曲線方程式表示如下：The aspheric curve equations of the above lenses are expressed as follows:

其中z為沿光軸190方向在高度為h的位置以表面頂點作參考的位置值；c是透鏡表面靠近光軸190的曲率，並為曲率半徑(R)的倒數(c=1/R)，R為透鏡表面靠近光軸190的曲率半徑，h是透鏡表面距離光軸190的垂直距離，k為圓錐係數（conic constant），而A、B、C、D、E、G、……為高階非球面係數。Where z is the position value with the surface apex as the reference at the height h along the direction of the optical axis 190; c is the curvature of the lens surface near the optical axis 190, and is the inverse of the radius of curvature (R) (c = 1 / R) , R is the curvature radius of the lens surface close to the optical axis 190, h is the vertical distance of the lens surface from the optical axis 190, k is the conic constant, and A, B, C, D, E, G, ... are Higher-order aspheric coefficient.

第一實施例的五片式廣角鏡片組中，五片式廣角鏡片組的焦距為f，五片式廣角鏡片組的光圈值(f-number)為Fno，五片式廣角鏡片組中最大視場角(畫角)為FOV，其數值如下：f=2.09(公厘)；Fno= 2.20；以及FOV= 124.3(度)。In the five-piece wide-angle lens group of the first embodiment, the focal length of the five-piece wide-angle lens group is f, the aperture value (f-number) of the five-piece wide-angle lens group is Fno. The field angle (painting angle) is FOV, and its values are as follows: f = 2.09 (mm); Fno = 2.20; and FOV = 124.3 (degrees).

第一實施例的五片式廣角鏡片組中，該第二透鏡120物側表面121的曲率半徑為R3，該第二透鏡120像側表面122的曲率半徑為R4，該五片式廣角鏡片組的整體焦距為f，並滿足下列條件： f+(R3+R4)/(R3-R4)＝2.639公厘。In the five-piece wide-angle lens group of the first embodiment, the curvature radius of the object-side surface 121 of the second lens 120 is R3, the curvature radius of the image-side surface 122 of the second lens 120 is R4, and the five-piece wide-angle lens group The overall focal length is f and satisfies the following conditions: f + (R3 + R4) / (R3-R4) = 2.639 mm.

第一實施例的五片式廣角鏡片組中，該第一透鏡110的焦距為f1，該第二透鏡120的焦距為f2，該第四透鏡140的焦距為f4，並滿足下列條件： f1/(f2*f4)＝-1.736公厘。In the five-piece wide-angle lens group of the first embodiment, the focal length of the first lens 110 is f1, the focal length of the second lens 120 is f2, the focal length of the fourth lens 140 is f4, and the following conditions are satisfied: f1 / (f2 * f4) = -1.736 mm.

第一實施例的五片式廣角鏡片組中，該五片式廣角鏡片組的整體焦距為f，該第一透鏡110的焦距為f1，並滿足下列條件： f/f1 ＝-0.355。In the five-piece wide-angle lens group of the first embodiment, the overall focal length of the five-piece wide-angle lens group is f, the focal length of the first lens 110 is f1, and the following conditions are satisfied: f / f1 = -0.355.

第一實施例的五片式廣角鏡片組中，該第三透鏡130、第四透鏡140與第五透鏡150的合成焦距為f345，該五片式廣角鏡片組的整體焦距為f，並滿足下列條件： f345/f ＝-10.85。In the five-piece wide-angle lens group of the first embodiment, the combined focal length of the third lens 130, the fourth lens 140, and the fifth lens 150 is f345, and the overall focal length of the five-piece wide-angle lens group is f, and satisfies the following Conditions: f345 / f = -10.85.

第一實施例的五片式廣角鏡片組中，該第二透鏡120與第三透鏡130的合成焦距為f23，該第四透鏡140與第五透鏡150的合成焦距為f45，並滿足下列條件： f23/f45 ＝0.464。In the five-piece wide-angle lens group of the first embodiment, the combined focal length of the second lens 120 and the third lens 130 is f23, the combined focal distance of the fourth lens 140 and the fifth lens 150 is f45, and the following conditions are satisfied: f23 / f45 = 0.464.

第一實施例的五片式廣角鏡片組中，該第一透鏡110的焦距為f1，該第二透鏡120、第三透鏡130、第四透鏡140與第五透鏡150的合成焦距為f2345，並滿足下列條件： f1/f2345 ＝-3.209。In the five-piece wide-angle lens group of the first embodiment, the focal length of the first lens 110 is f1, and the combined focal length of the second lens 120, the third lens 130, the fourth lens 140, and the fifth lens 150 is f2345, and The following conditions are satisfied: f1 / f2345 = -3.209.

第一實施例的五片式廣角鏡片組中，該第一透鏡110像側表面112的曲率半徑為R2，該第一透鏡110的焦距為f1，並滿足下列條件： R2/f1＝-5.683。In the five-piece wide-angle lens group of the first embodiment, the curvature radius of the image-side surface 112 of the first lens 110 is R2, the focal length of the first lens 110 is f1, and the following conditions are satisfied: R2 / f1 = -5.683.

第一實施例的五片式廣角鏡片組中，該第一透鏡110像側表面112的曲率半徑為R2，該第一透鏡110物側表面111的曲率半徑為R1，並滿足下列條件： R2/R1 ＝-9.385。In the five-piece wide-angle lens group of the first embodiment, the curvature radius of the image-side surface 112 of the first lens 110 is R2, the curvature radius of the object-side surface 111 of the first lens 110 is R1, and the following conditions are satisfied: R2 / R1 = -9.385.

第一實施例的五片式廣角鏡片組中，該第四透鏡140物側表面141的曲率半徑為R7，該第四透鏡140像側表面142的曲率半徑為R8，並滿足下列條件： R7/R8 ＝4.752。In the five-piece wide-angle lens group of the first embodiment, the curvature radius of the object-side surface 141 of the fourth lens 140 is R7, and the curvature radius of the image-side surface 142 of the fourth lens 140 is R8, and satisfies the following conditions: R7 / R8 = 4.752.

第一實施例的五片式廣角鏡片組中，該第四透鏡140於光軸190上的厚度為CT4，該第五透鏡150於光軸190上的厚度為CT5，並滿足下列條件： CT4/CT5 ＝2.079。In the five-piece wide-angle lens group of the first embodiment, the thickness of the fourth lens 140 on the optical axis 190 is CT4, and the thickness of the fifth lens 150 on the optical axis 190 is CT5, and the following conditions are satisfied: CT4 / CT5 = 2.079.

第一實施例的五片式廣角鏡片組中，該第一透鏡110的物側表面111至成像面180於光軸190上的距離為TL，該五片式廣角鏡片組的整體焦距為f，並滿足下列條件： TL/f ＝2.441。In the five-piece wide-angle lens group of the first embodiment, the distance from the object-side surface 111 of the first lens 110 to the imaging plane 180 on the optical axis 190 is TL, and the overall focal length of the five-piece wide-angle lens group is f, And meet the following conditions: TL / f = 2.441.

第一實施例的五片式廣角鏡片組中，該第一透鏡110的物側表面111至成像面180於光軸190上的距離為TL，該五片式廣角鏡片組在成像面180可擷取的成像高度為IMH，並滿足下列條件： TL/IMH ＝1.675。In the five-piece wide-angle lens group of the first embodiment, the distance from the object-side surface 111 of the first lens 110 to the imaging plane 180 on the optical axis 190 is TL, and the five-piece wide-angle lens group can be captured on the imaging plane 180 The imaging height is taken as IMH and meets the following conditions: TL / IMH = 1.675.

第一實施例的五片式廣角鏡片組中，該第五透鏡150的像側表面152至成像面180於光軸190上的距離為BFL，該第一透鏡110的物側表面111至成像面180於光軸190上的距離為TL，並滿足下列條件： BFL/TL ＝0.214。In the five-piece wide-angle lens group of the first embodiment, the distance from the image-side surface 152 to the imaging surface 180 of the fifth lens 150 on the optical axis 190 is BFL, and the object-side surface 111 of the first lens 110 to the imaging surface The distance of 180 on the optical axis 190 is TL, and the following conditions are satisfied: BFL / TL = 0.214.

第一實施例的五片式廣角鏡片組中，該第二透鏡120的色散係數為V2，該第三透鏡130的色散係數為V3，並滿足下列條件： V2-V3＝35.5。In the five-piece wide-angle lens group of the first embodiment, the dispersion coefficient of the second lens 120 is V2, and the dispersion coefficient of the third lens 130 is V3, and the following conditions are satisfied: V2-V3 = 35.5.

第一實施例的五片式廣角鏡片組中，該第四透鏡140的色散係數為V4，該第五透鏡150的色散係數為V5，並滿足下列條件：V4-V5＝35.5。In the five-piece wide-angle lens group of the first embodiment, the dispersion coefficient of the fourth lens 140 is V4, and the dispersion coefficient of the fifth lens 150 is V5, and the following conditions are satisfied: V4-V5 = 35.5.

再配合參照下列表1及表2。Refer to Tables 1 and 2 below for further cooperation.

表1Table 1 第一實施例 First embodiment f(焦距) =2.09 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 124.3 deg.(度) f (focal length) = 2.09 mm (mm), Fno (aperture value) = 2.20, FOV (painting angle) = 124.3 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -3.571 -3.571 (ASP) (ASP) 0.289 0.289 塑膠 plastic 1.54 1.54 55.9 55.9 -5.9 -5.9 3 3 33.515 33.515 (ASP) (ASP) 0.652 0.652 4 4 光圈 aperture 無限 unlimited -0.007 -0.007 5 5 第二透鏡 Second lens 4.183 4.183 (ASP) (ASP) 0.869 0.869 塑膠 plastic 1.54 1.54 55.9 55.9 1.85 1.85 6 6 -1.230 -1.230 (ASP) (ASP) 0.030 0.030 　　　 7 7 第三透鏡 Third lens 3.209 3.209 (ASP) (ASP) 0.262 0.262 塑膠 plastic 1.66 1.66 20.4 20.4 -4.76 -4.76 8 8 1.542 1.542 (ASP) (ASP) 0.363 0.363 　　　 9 9 第四透鏡 Fourth lens -4.166 -4.166 (ASP) (ASP) 0.986 0.986 塑膠 plastic 1.54 1.54 55.9 55.9 1.84 1.84 10 10 -0.877 -0.877 (ASP) (ASP) 0.099 0.099 　　　 11 11 第五透鏡 Fifth lens 1.984 1.984 (ASP) (ASP) 0.474 0.474 塑膠 plastic 1.66 1.66 20.4 20.4 -2.04 -2.04 12 12 0.729 0.729 (ASP) (ASP) 0.500 0.500 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.210 0.210 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.381 0.381 15 15 成像面 Imaging surface 無限 unlimited - -

表 2Table 2 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -6.6980E+01 -6.6980E + 01 -9.9536E+01 -9.9536E + 01 1.1551E+01 1.1551E + 01 -8.7167E-01 -8.7167E-01 -2.0205E+00 -2.0205E + 00 A: A: 3.2691E-01 3.2691E-01 5.9362E-01 5.9362E-01 -1.1537E-02 -1.1537E-02 1.8579E-01 1.8579E-01 -5.3616E-02 -5.3616E-02 B: B: -3.1984E-01 -3.1984E-01 -6.8637E-03 -6.8637E-03 -1.9254E-01 -1.9254E-01 -1.1648E+00 -1.1648E + 00 -6.6716E-01 -6.6716E-01 C: C: 3.7305E-01 3.7305E-01 -2.6524E+00 -2.6524E + 00 3.2205E-01 3.2205E-01 4.0613E+00 4.0613E + 00 2.3951E+00 2.3951E + 00 D: D: -3.4073E-01 -3.4073E-01 1.1213E+01 1.1213E + 01 9.9905E-01 9.9905E-01 -1.0525E+01 -1.0525E + 01 -5.1253E+00 -5.1253E + 00 E: E: 2.1485E-01 2.1485E-01 -2.1791E+01 -2.1791E + 01 -1.1465E+01 -1.1465E + 01 1.6987E+01 1.6987E + 01 6.3616E+00 6.3616E + 00 F F -7.9942E-02 -7.9942E-02 2.1743E+01 2.1743E + 01 2.4855E+01 2.4855E + 01 -1.5507E+01 -1.5507E + 01 -4.2605E+00 -4.2605E + 00 G G 1.2209E-02 1.2209E-02 -8.7842E+00 -8.7842E + 00 -1.6141E+01 -1.6141E + 01 5.8177E+00 5.8177E + 00 1.1369E+00 1.1369E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -1.5638E+00 -1.5638E + 00 3.8804E+00 3.8804E + 00 -2.0116E+00 -2.0116E + 00 -2.6686E+01 -2.6686E + 01 -4.3636E+00 -4.3636E + 00 A: A: -2.0622E-01 -2.0622E-01 1.5541E-01 1.5541E-01 1.1737E-01 1.1737E-01 -3.3118E-02 -3.3118E-02 -1.3892E-01 -1.3892E-01 B: B: 2.2264E-01 2.2264E-01 -2.4171E-01 -2.4171E-01 -2.6197E-01 -2.6197E-01 -2.3778E-01 -2.3778E-01 6.2658E-02 6.2658E-02 C: C: -2.7214E-01 -2.7214E-01 3.8544E-01 3.8544E-01 2.8842E-01 2.8842E-01 3.0306E-01 3.0306E-01 -1.6139E-02 -1.6139E-02 D: D: 2.8447E-01 2.8447E-01 -3.1944E-01 -3.1944E-01 -1.9760E-01 -1.9760E-01 -1.9695E-01 -1.9695E-01 1.0313E-03 1.0313E-03 E: E: -2.1326E-01 -2.1326E-01 1.3276E-01 1.3276E-01 1.0415E-01 1.0415E-01 6.8642E-02 6.8642E-02 4.3493E-04 4.3493E-04 F F 9.3521E-02 9.3521E-02 -2.2723E-02 -2.2723E-02 -3.3800E-02 -3.3800E-02 -1.1896E-02 -1.1896E-02 -1.0449E-04 -1.0449E-04 G G -1.8213E-02 -1.8213E-02 9.1738E-05 9.1738E-05 4.5385E-03 4.5385E-03 8.0549E-04 8.0549E-04 7.1313E-06 7.1313E-06

表1為圖1A第一實施例詳細的結構數據，其中曲率半徑、厚度及焦距的單位為mm，且表面0-15依序表示由物側至像側的表面。表2為第一實施例中的非球面數據，其中，k表非球面曲線方程式中的錐面係數，A、B、C、D、E、F、G…為高階非球面係數。此外，以下各實施例表格乃對應各實施例的示意圖與像面彎曲及歪曲收差曲線圖，表格中數據的定義皆與第一實施例的表1、及表2的定義相同，在此不加贅述。Table 1 is the detailed structural data of the first embodiment of FIG. 1A, where the units of the radius of curvature, thickness, and focal length are mm, and the surfaces 0-15 sequentially indicate the surface from the object side to the image side. Table 2 shows the aspheric data in the first embodiment, where k represents the cone coefficient in the aspheric curve equation, and A, B, C, D, E, F, G, ... are high-order aspheric coefficients. In addition, the tables of the following embodiments are schematic diagrams corresponding to the embodiments and the curve curves of the curvature and distortion of the image plane. The definitions of the data in the tables are the same as the definitions in Tables 1 and 2 of the first embodiment. Add more details.

＜第二實施例＞<Second Embodiment>

請參照圖2A及圖2B，其中圖2A繪示依照本發明第二實施例之五片式廣角鏡片組的示意圖，圖2B由左至右依序為第二實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖2A可知，五片式廣角鏡片組係包含有一光圈200和一光學組，該光學組由物側至像側依序包含第一透鏡210、第二透鏡220、第三透鏡230、第四透鏡240、第五透鏡250、紅外線濾除濾光元件270、以及成像面280，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈200設置在該第一透鏡210與第二透鏡220之間。Please refer to FIG. 2A and FIG. 2B. FIG. 2A shows a schematic diagram of a five-piece wide-angle lens group according to a second embodiment of the present invention. FIG. 2B is a five-piece wide-angle lens group of the second embodiment in order from left to right. Curved and distorted narrowing of the image plane. It can be seen from FIG. 2A that the five-piece wide-angle lens group includes an aperture 200 and an optical group, and the optical group sequentially includes a first lens 210, a second lens 220, a third lens 230, and a fourth lens from the object side to the image side. The lens 240, the fifth lens 250, the infrared filter element 270, and the imaging surface 280. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 200 is disposed between the first lens 210 and the second lens 220.

該第一透鏡210具有負屈折力，且為塑膠材質，其物側表面211近光軸290處為凹面，其像側表面212近光軸290處為凸面，且該物側表面211及像側表面212皆為非球面。The first lens 210 has a negative refractive power and is made of plastic. The object-side surface 211 is concave at the near optical axis 290, the image-side surface 212 is convex at the near-optical axis 290, and the object-side surface 211 and the image side The surfaces 212 are all aspheric.

該第二透鏡220具有正屈折力，且為塑膠材質，其物側表面221近光軸290處為凸面，其像側表面222近光軸290處為凸面，且該物側表面221及像側表面222皆為非球面。The second lens 220 has a positive refractive power and is made of plastic. The object-side surface 221 is convex near the optical axis 290, and its image-side surface 222 is convex near the optical axis 290. The object-side surface 221 and the image side The surfaces 222 are all aspheric.

該第三透鏡230具有負屈折力，且為塑膠材質，其物側表面231近光軸290處為凸面，其像側表面232近光軸290處為凹面，且該物側表面231及像側表面232皆為非球面。The third lens 230 has a negative refractive power and is made of plastic. The object-side surface 231 of the third lens 230 is convex near the optical axis 290, and the image-side surface 232 of the third lens 230 is concave near the optical axis 290. The surfaces 232 are all aspherical.

該第四透鏡240具有正屈折力，且為塑膠材質，其物側表面241近光軸290處為凹面，其像側表面242近光軸290處為凸面，且該物側表面241及像側表面242皆為非球面。The fourth lens 240 has a positive refractive power and is made of plastic. The object-side surface 241 thereof is concave near the optical axis 290, and its image-side surface 242 is convex near the optical axis 290. The surfaces 242 are all aspherical.

該第五透鏡250具有負屈折力，且為塑膠材質，其物側表面251近光軸290處為凸面，其像側表面252近光軸290處為凹面，且該物側表面251及像側表面252皆為非球面，且該物側表面251及該像側表面252至少一表面具有至少一反曲點。The fifth lens 250 has a negative refractive power and is made of plastic. The object-side surface 251 is convex near the optical axis 290, and the image-side surface 252 is concave near the optical axis 290. The object-side surface 251 and the image side The surfaces 252 are all aspheric, and at least one surface of the object-side surface 251 and the image-side surface 252 has at least one inflection point.

該紅外線濾除濾光元件270為玻璃材質，其設置於該第五透鏡250及成像面280間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 270 is made of glass and is disposed between the fifth lens 250 and the imaging surface 280 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表3、以及表4。Refer to Table 3 and Table 4 below for further cooperation.

表3table 3 第二實施例 Second embodiment f(焦距) =2.09 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 121 deg.(度) f (focal length) = 2.09 mm (mm), Fno (aperture value) = 2.20, FOV (picture angle) = 121 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -2.965 -2.965 (ASP) (ASP) 0.303 0.303 塑膠 plastic 1.54 1.54 55.9 55.9 -6.35 -6.35 3 3 -21.246 -21.246 (ASP) (ASP) 0.653 0.653 4 4 光圈 aperture 無限 unlimited -0.011 -0.011 5 5 第二透鏡 Second lens 4.138 4.138 (ASP) (ASP) 0.930 0.930 塑膠 plastic 1.54 1.54 55.9 55.9 1.77 1.77 6 6 -1.161 -1.161 (ASP) (ASP) 0.030 0.030 　　　 7 7 第三透鏡 Third lens 3.088 3.088 (ASP) (ASP) 0.272 0.272 塑膠 plastic 1.66 1.66 20.4 20.4 -4.44 -4.44 8 8 1.457 1.457 (ASP) (ASP) 0.389 0.389 　　　 9 9 第四透鏡 Fourth lens -3.237 -3.237 (ASP) (ASP) 0.945 0.945 塑膠 plastic 1.54 1.54 55.9 55.9 2.06 2.06 10 10 -0.919 -0.919 (ASP) (ASP) 0.079 0.079 　　　 11 11 第五透鏡 Fifth lens 1.927 1.927 (ASP) (ASP) 0.505 0.505 塑膠 plastic 1.66 1.66 20.4 20.4 -2.32 -2.32 12 12 0.767 0.767 (ASP) (ASP) 0.500 0.500 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.210 0.210 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.325 0.325 15 15 成像面 Imaging surface 無限 unlimited - -

表 4Table 4 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -4.3835E+01 -4.3835E + 01 -9.6323E+01 -9.6323E + 01 1.5555E+01 1.5555E + 01 -1.0786E+00 -1.0786E + 00 -3.7668E+00 -3.7668E + 00 A: A: 2.7566E-01 2.7566E-01 5.6309E-01 5.6309E-01 -5.1110E-02 -5.1110E-02 1.7522E-01 1.7522E-01 -6.9378E-02 -6.9378E-02 B: B: -2.2240E-01 -2.2240E-01 -1.6557E-01 -1.6557E-01 6.4500E-01 6.4500E-01 -8.4498E-01 -8.4498E-01 -4.8265E-01 -4.8265E-01 C: C: 1.8358E-01 1.8358E-01 -1.4312E+00 -1.4312E + 00 -8.5859E+00 -8.5859E + 00 2.5421E+00 2.5421E + 00 2.0773E+00 2.0773E + 00 D: D: -1.1799E-01 -1.1799E-01 6.0508E+00 6.0508E + 00 4.8424E+01 4.8424E + 01 -6.4535E+00 -6.4535E + 00 -5.2584E+00 -5.2584E + 00 E: E: 5.8138E-02 5.8138E-02 -1.0881E+01 -1.0881E + 01 -1.4443E+02 -1.4443E + 02 1.0499E+01 1.0499E + 01 7.4733E+00 7.4733E + 00 F F -1.9797E-02 -1.9797E-02 1.0041E+01 1.0041E + 01 2.0861E+02 2.0861E + 02 -9.8897E+00 -9.8897E + 00 -5.6422E+00 -5.6422E + 00 G G 2.9249E-03 2.9249E-03 -3.7836E+00 -3.7836E + 00 -1.1044E+02 -1.1044E + 02 3.8626E+00 3.8626E + 00 1.7075E+00 1.7075E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -1.7276E+00 -1.7276E + 00 2.8353E+00 2.8353E + 00 -1.3299E+00 -1.3299E + 00 -1.5510E+01 -1.5510E + 01 -4.0931E+00 -4.0931E + 00 A: A: -2.4742E-01 -2.4742E-01 1.8660E-01 1.8660E-01 2.0213E-01 2.0213E-01 -1.0223E-01 -1.0223E-01 -1.6026E-01 -1.6026E-01 B: B: 3.7827E-01 3.7827E-01 -3.2396E-01 -3.2396E-01 -3.9775E-01 -3.9775E-01 -1.8146E-01 -1.8146E-01 8.2256E-02 8.2256E-02 C: C: -5.6206E-01 -5.6206E-01 5.0690E-01 5.0690E-01 5.1104E-01 5.1104E-01 2.8721E-01 2.8721E-01 -2.6504E-02 -2.6504E-02 D: D: 6.0820E-01 6.0820E-01 -4.2056E-01 -4.2056E-01 -4.2728E-01 -4.2728E-01 -2.0483E-01 -2.0483E-01 4.5528E-03 4.5528E-03 E: E: -4.3195E-01 -4.3195E-01 1.9432E-01 1.9432E-01 2.3474E-01 2.3474E-01 7.7155E-02 7.7155E-02 -3.0455E-04 -3.0455E-04 F F 1.7236E-01 1.7236E-01 -4.6125E-02 -4.6125E-02 -7.0387E-02 -7.0387E-02 -1.4506E-02 -1.4506E-02 -1.6953E-05 -1.6953E-05 G G -2.9095E-02 -2.9095E-02 3.7759E-03 3.7759E-03 8.4309E-03 8.4309E-03 1.0730E-03 1.0730E-03 2.6750E-06 2.6750E-06

第二實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the second embodiment, the aspherical curve equation is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表3、以及表4可推算出下列數據：With Table 3 and Table 4, the following data can be calculated:

第二實施例 Second embodiment f[mm] f [mm] 2.09 2.09 R2/R1 R2 / R1 7.165 7.165 Fno Fno 2.2 2.2 R7/R8 R7 / R8 3.520 3.520 FOV[deg.] FOV [deg.] 121.0 121.0 CT4/CT5 CT4 / CT5 1.871 1.871 f/f1 f / f1 -0.329 -0.329 TL/f TL / f 2.458 2.458 f345/f f345 / f -5.759 -5.759 TL/IMH TL / IMH 1.749 1.749 f23/f45 f23 / f45 0.383 0.383 BFL/TL BFL / TL 0.202 0.202 f1/f2345 f1 / f2345 -3.404 -3.404 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.649 2.649 R2/f1 R2 / f1 3.345 3.345 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.743 -1.743

＜第三實施例＞<Third Embodiment>

請參照圖3A及圖3B，其中圖3A繪示依照本發明第三實施例之五片式廣角鏡片組的示意圖，圖3B由左至右依序為第三實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖3A可知，五片式廣角鏡片組係包含有一光圈300和一光學組，該光學組由物側至像側依序包含第一透鏡310、第二透鏡320、第三透鏡330、第四透鏡340、第五透鏡350、紅外線濾除濾光元件370、以及成像面380，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈300設置在該第一透鏡310與第二透鏡320之間。Please refer to FIGS. 3A and 3B. FIG. 3A is a schematic diagram of a five-piece wide-angle lens group according to a third embodiment of the present invention. Curved and distorted narrowing of the image plane. It can be seen from FIG. 3A that the five-piece wide-angle lens group includes an aperture 300 and an optical group, and the optical group sequentially includes the first lens 310, the second lens 320, the third lens 330, and the fourth lens from the object side to the image side. The lens 340, the fifth lens 350, the infrared filter element 370, and the imaging surface 380. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 300 is disposed between the first lens 310 and the second lens 320.

該第一透鏡310具有負屈折力，且為塑膠材質，其物側表面311近光軸390處為凹面，其像側表面312近光軸390處為凸面，且該物側表面311及像側表面312皆為非球面。The first lens 310 has a negative refractive power and is made of plastic. The object-side surface 311 is a concave surface near the optical axis 390, the image-side surface 312 is a convex surface near the optical axis 390, and the object-side surface 311 and the image side The surfaces 312 are all aspheric.

該第二透鏡320具有正屈折力，且為塑膠材質，其物側表面321近光軸390處為凸面，其像側表面322近光軸390處為凸面，且該物側表面321及像側表面322皆為非球面。The second lens 320 has a positive refractive power and is made of plastic. The object-side surface 321 is convex near the optical axis 390, and its image-side surface 322 is convex near the optical axis 390. The surfaces 322 are all aspheric.

該第三透鏡330具有負屈折力，且為塑膠材質，其物側表面331近光軸390處為凸面，其像側表面332近光軸390處為凹面，且該物側表面331及像側表面332皆為非球面。The third lens 330 has a negative refractive power and is made of plastic. Its object-side surface 331 is convex near the optical axis 390, its image-side surface 332 is concave near the optical axis 390, and the object-side surface 331 and the image side The surfaces 332 are all aspherical.

該第四透鏡340具有正屈折力，且為塑膠材質，其物側表面341近光軸390處為凹面，其像側表面342近光軸390處為凸面，且該物側表面341及像側表面342皆為非球面。The fourth lens 340 has a positive refractive power and is made of plastic. The object-side surface 341 is a concave surface near the optical axis 390, and the image-side surface 342 is a convex surface near the optical axis 390. The object-side surface 341 and the image side The surfaces 342 are all aspheric.

該第五透鏡350具有負屈折力，且為塑膠材質，其物側表面351近光軸390處為凸面，其像側表面352近光軸390處為凹面，且該物側表面351及像側表面352皆為非球面，且該物側表面351及該像側表面352至少一表面具有至少一反曲點。The fifth lens 350 has a negative refractive power and is made of plastic. Its object-side surface 351 is convex near the optical axis 390, and its image-side surface 352 is concave near the optical axis 390. The surface 352 is an aspheric surface, and at least one surface of the object-side surface 351 and the image-side surface 352 has at least one inflection point.

該紅外線濾除濾光元件370為玻璃材質，其設置於該第五透鏡350及成像面380間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 370 is made of glass and is disposed between the fifth lens 350 and the imaging surface 380 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表5、以及表6。Refer to Table 5 and Table 6 below for further cooperation.

表5table 5 第三實施例 Third embodiment f(焦距) =1.97 mm(公厘), Fno(光圈值) = 2.40, FOV(畫角) = 125 deg.(度) f (focal length) = 1.97 mm (mm), Fno (aperture value) = 2.40, FOV (picture angle) = 125 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -2.864 -2.864 (ASP) (ASP) 0.326 0.326 塑膠 plastic 1.54 1.54 55.9 55.9 -5.07 -5.07 3 3 82.550 82.550 (ASP) (ASP) 0.602 0.602 4 4 光圈 aperture 無限 unlimited 0.006 0.006 5 5 第二透鏡 Second lens 4.597 4.597 (ASP) (ASP) 1.007 1.007 塑膠 plastic 1.54 1.54 55.9 55.9 1.62 1.62 6 6 -1.008 -1.008 (ASP) (ASP) 0.030 0.030 　　　 7 7 第三透鏡 Third lens 3.642 3.642 (ASP) (ASP) 0.298 0.298 塑膠 plastic 1.66 1.66 20.4 20.4 -3.8 -3.8 8 8 1.444 1.444 (ASP) (ASP) 0.394 0.394 　　　 9 9 第四透鏡 Fourth lens -2.751 -2.751 (ASP) (ASP) 0.773 0.773 塑膠 plastic 1.54 1.54 55.9 55.9 2.5 2.5 10 10 -1.003 -1.003 (ASP) (ASP) 0.345 0.345 　　　 11 11 第五透鏡 Fifth lens 1.208 1.208 (ASP) (ASP) 0.313 0.313 塑膠 plastic 1.66 1.66 20.4 20.4 -3.05 -3.05 12 12 0.679 0.679 (ASP) (ASP) 0.500 0.500 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.110 0.110 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.318 0.318 15 15 成像面 Imaging surface 無限 unlimited - -

表 6Table 6 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -3.6150E+01 -3.6150E + 01 -9.9500E+01 -9.9500E + 01 4.3931E+00 4.3931E + 00 -1.0971E+00 -1.0971E + 00 -1.0984E+01 -1.0984E + 01 A: A: 3.4338E-01 3.4338E-01 6.5085E-01 6.5085E-01 -1.7385E-02 -1.7385E-02 -1.1424E-03 -1.1424E-03 -2.5718E-01 -2.5718E-01 B: B: -4.0581E-01 -4.0581E-01 -6.9346E-02 -6.9346E-02 2.6026E-01 2.6026E-01 5.0867E-01 5.0867E-01 5.6594E-01 5.6594E-01 C: C: 5.0841E-01 5.0841E-01 -3.7883E+00 -3.7883E + 00 -4.3597E+00 -4.3597E + 00 -2.4419E+00 -2.4419E + 00 -1.2266E+00 -1.2266E + 00 D: D: -4.6433E-01 -4.6433E-01 1.9142E+01 1.9142E + 01 2.7076E+01 2.7076E + 01 4.7521E+00 4.7521E + 00 1.5816E+00 1.5816E + 00 E: E: 2.7918E-01 2.7918E-01 -4.3618E+01 -4.3618E + 01 -8.7873E+01 -8.7873E + 01 -5.1328E+00 -5.1328E + 00 -1.2349E+00 -1.2349E + 00 F F -9.3571E-02 -9.3571E-02 5.0757E+01 5.0757E + 01 1.1027E+02 1.1027E + 02 2.2027E+00 2.2027E + 00 3.6394E-01 3.6394E-01 G G 1.2517E-02 1.2517E-02 -2.3407E+01 -2.3407E + 01 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -1.8612E+00 -1.8612E + 00 1.8107E+00 1.8107E + 00 -1.1710E+00 -1.1710E + 00 -9.2524E+00 -9.2524E + 00 -3.9277E+00 -3.9277E + 00 A: A: -2.8276E-01 -2.8276E-01 2.2416E-01 2.2416E-01 9.2094E-02 9.2094E-02 -1.6820E-01 -1.6820E-01 -1.3794E-01 -1.3794E-01 B: B: 3.4401E-01 3.4401E-01 -1.7599E-01 -1.7599E-01 4.3696E-02 4.3696E-02 4.4042E-02 4.4042E-02 5.9372E-02 5.9372E-02 C: C: -2.7096E-01 -2.7096E-01 -1.9957E-02 -1.9957E-02 -1.6207E-01 -1.6207E-01 -2.7066E-02 -2.7066E-02 -1.8230E-02 -1.8230E-02 D: D: 1.0164E-01 1.0164E-01 2.6167E-01 2.6167E-01 1.4335E-01 1.4335E-01 1.6463E-02 1.6463E-02 3.2113E-03 3.2113E-03 E: E: -9.8766E-03 -9.8766E-03 -2.4790E-01 -2.4790E-01 -4.1278E-02 -4.1278E-02 -4.8835E-03 -4.8835E-03 -2.4931E-04 -2.4931E-04 F F -3.0624E-03 -3.0624E-03 9.8220E-02 9.8220E-02 8.0252E-04 8.0252E-04 7.2015E-04 7.2015E-04 -4.6000E-06 -4.6000E-06 G G 0.0000E+00 0.0000E + 00 -1.4868E-02 -1.4868E-02 8.3910E-04 8.3910E-04 -4.3498E-05 -4.3498E-05 1.3709E-06 1.3709E-06

第三實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the third embodiment, the aspherical curve equation is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表5、以及表6可推算出下列數據：With Table 5 and Table 6, the following data can be calculated:

第三實施例 Third embodiment f[mm] f [mm] 1.97 1.97 R2/R1 R2 / R1 -28.818 -28.818 Fno Fno 2.4 2.4 R7/R8 R7 / R8 2.743 2.743 FOV[deg.] FOV [deg.] 125.0 125.0 CT4/CT5 CT4 / CT5 2.475 2.475 f/f1 f / f1 -0.390 -0.390 TL/f TL / f 2.543 2.543 f345/f f345 / f -4.153 -4.153 TL/IMH TL / IMH 1.702 1.702 f23/f45 f23 / f45 0.367 0.367 BFL/TL BFL / TL 0.185 0.185 f1/f2345 f1 / f2345 -2.897 -2.897 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.615 2.615 R2/f1 R2 / f1 -16.296 -16.296 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.252 -1.252

＜第四實施例＞<Fourth embodiment>

請參照圖4A及圖4B，其中圖4A繪示依照本發明第四實施例之五片式廣角鏡片組的示意圖，圖4B由左至右依序為第四實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖4A可知，五片式廣角鏡片組係包含有一光圈400和一光學組，該光學組由物側至像側依序包含第一透鏡410、第二透鏡420、第三透鏡430、第四透鏡440、第五透鏡450、紅外線濾除濾光元件470、以及成像面480，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈400設置在該第一透鏡410與第二透鏡420之間。Please refer to FIG. 4A and FIG. 4B. FIG. 4A shows a schematic diagram of a five-piece wide-angle lens group according to a fourth embodiment of the present invention. FIG. 4B is a five-piece wide-angle lens group of the fourth embodiment in order from left to right. Curved and distorted narrowing of the image plane. As can be seen from FIG. 4A, the five-piece wide-angle lens group includes an aperture 400 and an optical group, and the optical group sequentially includes the first lens 410, the second lens 420, the third lens 430, and the fourth lens from the object side to the image side. The lens 440, the fifth lens 450, the infrared filtering element 470, and the imaging surface 480. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 400 is disposed between the first lens 410 and the second lens 420.

該第一透鏡410具有負屈折力，且為塑膠材質，其物側表面411近光軸490處為凹面，其像側表面412近光軸490處為凸面，且該物側表面411及像側表面412皆為非球面。The first lens 410 has a negative refractive power and is made of plastic. The object-side surface 411 is concave at the near optical axis 490, the image-side surface 412 is convex at the near-optical axis 490, and the object-side surface 411 and the image side The surfaces 412 are all aspherical.

該第二透鏡420具有正屈折力，且為塑膠材質，其物側表面421近光軸490處為凸面，其像側表面422近光軸490處為凸面，且該物側表面421及像側表面422皆為非球面。The second lens 420 has a positive refractive power and is made of plastic. The object-side surface 421 is convex near the optical axis 490, the image-side surface 422 is convex near the optical axis 490, and the object-side surface 421 and the image side The surfaces 422 are all aspherical.

該第三透鏡430具有負屈折力，且為塑膠材質，其物側表面431近光軸490處為凸面，其像側表面432近光軸490處為凹面，且該物側表面431及像側表面432皆為非球面。The third lens 430 has a negative refractive power and is made of plastic. Its object-side surface 431 is convex near the optical axis 490, its image-side surface 432 is concave near the optical axis 490, and the object-side surface 431 and the image side The surfaces 432 are all aspheric.

該第四透鏡440具有正屈折力，且為塑膠材質，其物側表面441近光軸490處為凹面，其像側表面442近光軸490處為凸面，且該物側表面441及像側表面442皆為非球面。The fourth lens 440 has a positive refractive power and is made of plastic. The object-side surface 441 is concave near the optical axis 490, the image-side surface 442 is convex near the optical axis 490, and the object-side surface 441 and the image side The surfaces 442 are all aspherical.

該第五透鏡450具有負屈折力，且為塑膠材質，其物側表面451近光軸490處為凸面，其像側表面452近光軸490處為凹面，且該物側表面451及像側表面452皆為非球面，且該物側表面451及該像側表面452至少一表面具有至少一反曲點。The fifth lens 450 has a negative refractive power and is made of plastic. Its object-side surface 451 is convex near the optical axis 490, its image-side surface 452 is concave near the optical axis 490, and the object-side surface 451 and the image side The surfaces 452 are all aspheric, and at least one surface of the object-side surface 451 and the image-side surface 452 has at least one inflection point.

該紅外線濾除濾光元件470為玻璃材質，其設置於該第五透鏡450及成像面480間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 470 is made of glass and is disposed between the fifth lens 450 and the imaging surface 480 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表7、以及表8。Refer to Table 7 and Table 8 below for further cooperation.

表7Table 7 第四實施例 Fourth embodiment f(焦距) =1.89 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 125.6 deg.(度) f (focal length) = 1.89 mm (mm), Fno (aperture value) = 2.20, FOV (drawing angle) = 125.6 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -2.750 -2.750 (ASP) (ASP) 0.451 0.451 塑膠 plastic 1.54 1.54 55.9 55.9 -5.56 -5.56 3 3 -30.842 -30.842 (ASP) (ASP) 0.667 0.667 4 4 光圈 aperture 無限 unlimited 0.004 0.004 5 5 第二透鏡 Second lens 4.216 4.216 (ASP) (ASP) 0.965 0.965 塑膠 plastic 1.54 1.54 55.9 55.9 1.53 1.53 6 6 -0.954 -0.954 (ASP) (ASP) 0.030 0.030 　　　 7 7 第三透鏡 Third lens 3.871 3.871 (ASP) (ASP) 0.291 0.291 塑膠 plastic 1.66 1.66 20.4 20.4 -3.21 -3.21 8 8 1.335 1.335 (ASP) (ASP) 0.457 0.457 　　　 9 9 第四透鏡 Fourth lens -2.770 -2.770 (ASP) (ASP) 0.807 0.807 塑膠 plastic 1.54 1.54 55.9 55.9 2.3 2.3 10 10 -0.952 -0.952 (ASP) (ASP) 0.140 0.140 　　　 11 11 第五透鏡 Fifth lens 1.145 1.145 (ASP) (ASP) 0.353 0.353 塑膠 plastic 1.66 1.66 20.4 20.4 -2.99 -2.99 12 12 0.637 0.637 (ASP) (ASP) 0.500 0.500 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.110 0.110 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.325 0.325 15 15 成像面 Imaging surface 無限 unlimited - -

表 8Table 8 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -3.8915E+01 -3.8915E + 01 2.1855E+01 2.1855E + 01 1.0867E+01 1.0867E + 01 -1.2031E+00 -1.2031E + 00 -2.2226E+01 -2.2226E + 01 A: A: 1.3206E-01 1.3206E-01 4.6416E-01 4.6416E-01 -1.1409E-02 -1.1409E-02 3.3592E-01 3.3592E-01 1.2319E-02 1.2319E-02 B: B: -3.4944E-02 -3.4944E-02 -5.3429E-01 -5.3429E-01 -9.1234E-01 -9.1234E-01 -2.1561E+00 -2.1561E + 00 -1.1774E+00 -1.1774E + 00 C: C: -1.0865E-02 -1.0865E-02 1.4047E+00 1.4047E + 00 1.0229E+01 1.0229E + 01 8.5154E+00 8.5154E + 00 4.8799E+00 4.8799E + 00 D: D: 1.7466E-02 1.7466E-02 -2.6300E+00 -2.6300E + 00 -7.6253E+01 -7.6253E + 01 -2.2613E+01 -2.2613E + 01 -1.1403E+01 -1.1403E + 01 E: E: -6.5956E-03 -6.5956E-03 2.9214E+00 2.9214E + 00 3.1269E+02 3.1269E + 02 3.5169E+01 3.5169E + 01 1.5062E+01 1.5062E + 01 F F 7.7302E-04 7.7302E-04 -1.2602E+00 -1.2602E + 00 -6.8127E+02 -6.8127E + 02 -2.9921E+01 -2.9921E + 01 -1.0740E+01 -1.0740E + 01 G G 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 6.1257E+02 6.1257E + 02 1.0595E+01 1.0595E + 01 3.1646E+00 3.1646E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -1.9702E+00 -1.9702E + 00 2.3038E+00 2.3038E + 00 -1.2894E+00 -1.2894E + 00 -7.6906E+00 -7.6906E + 00 -3.5444E+00 -3.5444E + 00 A: A: -3.1249E-01 -3.1249E-01 2.2949E-01 2.2949E-01 9.5956E-02 9.5956E-02 -1.7066E-01 -1.7066E-01 -1.8094E-01 -1.8094E-01 B: B: 4.2522E-01 4.2522E-01 -2.7552E-01 -2.7552E-01 5.4250E-02 5.4250E-02 1.0584E-02 1.0584E-02 9.8680E-02 9.8680E-02 C: C: -4.2666E-01 -4.2666E-01 2.8656E-01 2.8656E-01 -2.5737E-01 -2.5737E-01 2.3344E-02 2.3344E-02 -3.7097E-02 -3.7097E-02 D: D: 2.6553E-01 2.6553E-01 -1.4468E-01 -1.4468E-01 3.0207E-01 3.0207E-01 -1.3031E-02 -1.3031E-02 8.7051E-03 8.7051E-03 E: E: -1.0064E-01 -1.0064E-01 2.8307E-02 2.8307E-02 -1.5162E-01 -1.5162E-01 3.8723E-03 3.8723E-03 -1.2179E-03 -1.2179E-03 F F 2.0741E-02 2.0741E-02 2.6683E-03 2.6683E-03 3.5178E-02 3.5178E-02 -5.9849E-04 -5.9849E-04 8.9474E-05 8.9474E-05 G G -1.9744E-03 -1.9744E-03 -1.3892E-03 -1.3892E-03 -3.1223E-03 -3.1223E-03 3.6560E-05 3.6560E-05 -2.4637E-06 -2.4637E-06

第四實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the fourth embodiment, the curve equation of the aspherical surface is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表7、以及表8可推算出下列數據：With Table 7 and Table 8, the following data can be calculated:

第四實施例 Fourth embodiment f[mm] f [mm] 1.89 1.89 R2/R1 R2 / R1 11.215 11.215 Fno Fno 2.4 2.4 R7/R8 R7 / R8 2.910 2.910 FOV[deg.] FOV [deg.] 125.6 125.6 CT4/CT5 CT4 / CT5 2.287 2.287 f/f1 f / f1 -0.340 -0.340 TL/f TL / f 2.692 2.692 f345/f f345 / f -4.133 -4.133 TL/IMH TL / IMH 1.717 1.717 f23/f45 f23 / f45 0.424 0.424 BFL/TL BFL / TL 0.183 0.183 f1/f2345 f1 / f2345 -3.126 -3.126 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.525 2.525 R2/f1 R2 / f1 5.543 5.543 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.587 -1.587

＜第五實施例＞<Fifth Embodiment>

請參照圖5A及圖5B，其中圖5A繪示依照本發明第五實施例之五片式廣角鏡片組的示意圖，圖5B由左至右依序為第五實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖5A可知，五片式廣角鏡片組係包含有一光圈500和一光學組，該光學組由物側至像側依序包含第一透鏡510、第二透鏡520、第三透鏡530、第四透鏡540、第五透鏡550、紅外線濾除濾光元件570、以及成像面580，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈500設置在該第一透鏡510與第二透鏡520之間。Please refer to FIGS. 5A and 5B. FIG. 5A is a schematic diagram of a five-piece wide-angle lens group according to a fifth embodiment of the present invention. FIG. 5B is a five-piece wide-angle lens group of the fifth embodiment in order from left to right. Curved and distorted narrowing of the image plane. It can be seen from FIG. 5A that the five-piece wide-angle lens group includes an aperture 500 and an optical group, and the optical group sequentially includes the first lens 510, the second lens 520, the third lens 530, and the fourth lens from the object side to the image side. The lens 540, the fifth lens 550, the infrared filter element 570, and the imaging surface 580. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 500 is disposed between the first lens 510 and the second lens 520.

該第一透鏡510具有負屈折力，且為塑膠材質，其物側表面511近光軸590處為凸面，其像側表面512近光軸590處為凹面，且該物側表面511及像側表面512皆為非球面。The first lens 510 has a negative refractive power and is made of plastic. The object-side surface 511 is convex near the optical axis 590, the image-side surface 512 is concave near the optical axis 590, and the object-side surface 511 and the image side The surfaces 512 are all aspheric.

該第二透鏡520具有正屈折力，且為塑膠材質，其物側表面521近光軸590處為凸面，其像側表面522近光軸590處為凸面，且該物側表面521及像側表面522皆為非球面。The second lens 520 has a positive refractive power and is made of plastic. The object-side surface 521 is convex near the optical axis 590, and the image-side surface 522 is convex near the optical axis 590. The object-side surface 521 and the image side The surfaces 522 are all aspherical.

該第三透鏡530具有負屈折力，且為塑膠材質，其物側表面531近光軸590處為凸面，其像側表面532近光軸590處為凹面，且該物側表面531及像側表面532皆為非球面。The third lens 530 has a negative refractive power and is made of plastic. Its object-side surface 531 is convex near the optical axis 590, its image-side surface 532 is concave near the optical axis 590, and the object-side surface 531 and the image side The surfaces 532 are all aspherical.

該第四透鏡540具有正屈折力，且為塑膠材質，其物側表面541近光軸590處為凹面，其像側表面542近光軸590處為凸面，且該物側表面541及像側表面542皆為非球面。The fourth lens 540 has a positive refractive power and is made of plastic. The object-side surface 541 is concave near the optical axis 590, and the image-side surface 542 is convex near the optical axis 590. The surfaces 542 are all aspherical.

該第五透鏡550具有負屈折力，且為塑膠材質，其物側表面551近光軸590處為凸面，其像側表面552近光軸590處為凹面，且該物側表面551及像側表面552皆為非球面，且該物側表面551及該像側表面552至少一表面具有至少一反曲點。The fifth lens 550 has negative refractive power and is made of plastic. The object-side surface 551 is convex near the optical axis 590, and the image-side surface 552 is concave near the optical axis 590. The surface 552 is an aspheric surface, and at least one surface of the object-side surface 551 and the image-side surface 552 has at least one inflection point.

該紅外線濾除濾光元件570為玻璃材質，其設置於該第五透鏡550及成像面580間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 570 is made of glass and is disposed between the fifth lens 550 and the imaging surface 580 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表9、以及表10。Refer to Table 9 and Table 10 below for further cooperation.

表9Table 9 第五實施例 Fifth Embodiment f(焦距) =2.07 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 123.8 deg.(度) f (focal length) = 2.07 mm (mm), Fno (aperture value) = 2.20, FOV (painting angle) = 123.8 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens 8.363 8.363 (ASP) (ASP) 0.344 0.344 塑膠 plastic 1.54 1.54 55.9 55.9 -4.92 -4.92 3 3 2.002 2.002 (ASP) (ASP) 0.552 0.552 4 4 光圈 aperture 無限 unlimited 0.007 0.007 5 5 第二透鏡 Second lens 8.598 8.598 (ASP) (ASP) 0.811 0.811 塑膠 plastic 1.54 1.54 55.9 55.9 1.92 1.92 6 6 -1.153 -1.153 (ASP) (ASP) 0.053 0.053 　　　 7 7 第三透鏡 Third lens 4.475 4.475 (ASP) (ASP) 0.311 0.311 塑膠 plastic 1.66 1.66 20.4 20.4 -4.64 -4.64 8 8 1.778 1.778 (ASP) (ASP) 0.283 0.283 　　　 9 9 第四透鏡 Fourth lens -11.472 -11.472 (ASP) (ASP) 0.953 0.953 塑膠 plastic 1.54 1.54 55.9 55.9 1.9 1.9 10 10 -0.978 -0.978 (ASP) (ASP) 0.260 0.260 　　　 11 11 第五透鏡 Fifth lens 2.169 2.169 (ASP) (ASP) 0.460 0.460 塑膠 plastic 1.66 1.66 20.4 20.4 -2.31 -2.31 12 12 0.824 0.824 (ASP) (ASP) 0.460 0.460 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.210 0.210 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.400 0.400 15 15 成像面 Imaging surface 無限 unlimited - -

表 10Table 10 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: 4.0456E+01 4.0456E + 01 2.7838E-01 2.7838E-01 -4.3709E+01 -4.3709E + 01 -1.6326E+00 -1.6326E + 00 1.7734E+01 1.7734E + 01 A: A: 2.5800E-01 2.5800E-01 4.6430E-01 4.6430E-01 -5.4882E-02 -5.4882E-02 -1.7254E-01 -1.7254E-01 -2.8153E-01 -2.8153E-01 B: B: -1.4963E-01 -1.4963E-01 1.3673E-01 1.3673E-01 -4.3020E-01 -4.3020E-01 2.8502E-02 2.8502E-02 3.3858E-01 3.3858E-01 C: C: 8.3934E-02 8.3934E-02 -6.2221E-01 -6.2221E-01 1.0017E+00 1.0017E + 00 -3.0929E-01 -3.0929E-01 -5.2822E-01 -5.2822E-01 D: D: -3.2730E-03 -3.2730E-03 9.9842E-01 9.9842E-01 2.8355E+00 2.8355E + 00 -2.0548E-01 -2.0548E-01 4.2556E-01 4.2556E-01 E: E: -8.4390E-03 -8.4390E-03 2.9802E+00 2.9802E + 00 -3.9760E+01 -3.9760E + 01 9.6324E-01 9.6324E-01 -2.2861E-01 -2.2861E-01 F F -5.9767E-03 -5.9767E-03 -5.4406E+00 -5.4406E + 00 7.4050E+01 7.4050E + 01 -1.2711E+00 -1.2711E + 00 3.0080E-02 3.0080E-02 G G 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -9.5885E+00 -9.5885E + 00 7.1180E+01 7.1180E + 01 -2.4791E+00 -2.4791E + 00 -3.2020E+01 -3.2020E + 01 -5.0302E+00 -5.0302E + 00 A: A: -7.9775E-02 -7.9775E-02 5.7809E-02 5.7809E-02 -2.6402E-02 -2.6402E-02 -9.0988E-02 -9.0988E-02 -9.0837E-02 -9.0837E-02 B: B: 1.3949E-01 1.3949E-01 -2.1854E-02 -2.1854E-02 1.0691E-02 1.0691E-02 -7.0804E-03 -7.0804E-03 2.8463E-02 2.8463E-02 C: C: -1.4965E-01 -1.4965E-01 6.0269E-02 6.0269E-02 1.3077E-02 1.3077E-02 -2.9019E-04 -2.9019E-04 -6.3725E-03 -6.3725E-03 D: D: 7.1005E-02 7.1005E-02 -5.4681E-02 -5.4681E-02 -1.0371E-02 -1.0371E-02 7.6312E-03 7.6312E-03 7.6330E-04 7.6330E-04 E: E: -9.2714E-03 -9.2714E-03 2.3103E-02 2.3103E-02 1.0164E-02 1.0164E-02 -5.4486E-03 -5.4486E-03 -5.6534E-05 -5.6534E-05 F F -4.0156E-03 -4.0156E-03 -3.7836E-03 -3.7836E-03 -2.7739E-03 -2.7739E-03 1.0710E-03 1.0710E-03 1.8430E-06 1.8430E-06 G G 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00

第五實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the fifth embodiment, the aspherical curve equation is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表9、以及表10可推算出下列數據：With Table 9 and Table 10, the following data can be calculated:

第五實施例 Fifth Embodiment f[mm] f [mm] 2.07 2.07 R2/R1 R2 / R1 0.239 0.239 Fno Fno 2.2 2.2 R7/R8 R7 / R8 11.735 11.735 FOV[deg.] FOV [deg.] 123.8 123.8 CT4/CT5 CT4 / CT5 2.070 2.070 f/f1 f / f1 -0.420 -0.420 TL/f TL / f 2.470 2.470 f345/f f345 / f 23.738 23.738 TL/IMH TL / IMH 1.674 1.674 f23/f45 f23 / f45 0.728 0.728 BFL/TL BFL / TL 0.210 0.210 f1/f2345 f1 / f2345 -2.904 -2.904 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.830 2.830 R2/f1 R2 / f1 -0.407 -0.407 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.350 -1.350

＜第六實施例＞<Sixth embodiment>

請參照圖6A及圖6B，其中圖6A繪示依照本發明第六實施例之五片式廣角鏡片組的示意圖，圖6B由左至右依序為第六實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖6A可知，五片式廣角鏡片組係包含有一光圈600和一光學組，該光學組由物側至像側依序包含第一透鏡610、第二透鏡620、第三透鏡630、第四透鏡640、第五透鏡650、紅外線濾除濾光元件670、以及成像面680，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈600設置在該第一透鏡610與第二透鏡620之間。Please refer to FIG. 6A and FIG. 6B, wherein FIG. 6A shows a schematic diagram of a five-piece wide-angle lens group according to a sixth embodiment of the present invention, and FIG. 6B is a five-piece wide-angle lens group of the sixth embodiment in order from left to right. Curved and distorted narrowing of the image plane. It can be seen from FIG. 6A that the five-piece wide-angle lens group includes an aperture 600 and an optical group. The optical group sequentially includes a first lens 610, a second lens 620, a third lens 630, and a fourth lens from the object side to the image side. The lens 640, the fifth lens 650, the infrared filtering element 670, and the imaging surface 680. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 600 is disposed between the first lens 610 and the second lens 620.

該第一透鏡610具有負屈折力，且為塑膠材質，其物側表面611近光軸690處為凹面，其像側表面612近光軸690處為凸面，且該物側表面611及像側表面612皆為非球面。The first lens 610 has a negative refractive power and is made of plastic. The object-side surface 611 of the first lens 610 is concave near the optical axis 690, the image-side surface 612 of the first lens 610 is convex near the optical axis 690, and the object-side surface 611 and the image side The surfaces 612 are all aspherical.

該第二透鏡620具有正屈折力，且為塑膠材質，其物側表面621近光軸690處為凸面，其像側表面622近光軸690處為凸面，且該物側表面621及像側表面622皆為非球面。The second lens 620 has a positive refractive power and is made of plastic. An object-side surface 621 thereof is convex near the optical axis 690, an image-side surface 622 thereof is convex near the optical axis 690, and the object-side surface 621 and the image side The surfaces 622 are all aspherical.

該第三透鏡630具有負屈折力，且為塑膠材質，其物側表面631近光軸690處為凸面，其像側表面632近光軸690處為凹面，且該物側表面631及像側表面632皆為非球面。The third lens 630 has a negative refractive power and is made of plastic. The object-side surface 631 is convex near the optical axis 690, the image-side surface 632 is concave near the optical axis 690, and the object-side surface 631 and the image side The surfaces 632 are all aspherical.

該第四透鏡640具有正屈折力，且為塑膠材質，其物側表面641近光軸690處為凹面，其像側表面642近光軸690處為凸面，且該物側表面641及像側表面642皆為非球面。The fourth lens 640 has a positive refractive power and is made of plastic. The object-side surface 641 is concave at the near optical axis 690, the image-side surface 642 is convex at the near-optical axis 690, and the object-side surface 641 and the image side The surfaces 642 are all aspherical.

該第五透鏡650具有負屈折力，且為塑膠材質，其物側表面651近光軸690處為凸面，其像側表面652近光軸690處為凹面，且該物側表面651及像側表面652皆為非球面，且該物側表面651及該像側表面652至少一表面具有至少一反曲點。The fifth lens 650 has a negative refractive power and is made of plastic. The object-side surface 651 is convex near the optical axis 690, the image-side surface 652 is concave near the optical axis 690, and the object-side surface 651 and the image side The surface 652 is an aspheric surface, and at least one surface of the object-side surface 651 and the image-side surface 652 has at least one inflection point.

該紅外線濾除濾光元件670為玻璃材質，其設置於該第五透鏡650及成像面680間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 670 is made of glass and is disposed between the fifth lens 650 and the imaging surface 680 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表11、以及表12。Refer to Table 11 and Table 12 below for further cooperation.

表11Table 11 第六實施例 Sixth embodiment f(焦距) =2.05 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 124.2 deg.(度) f (focal length) = 2.05 mm (mm), Fno (aperture value) = 2.20, FOV (painting angle) = 124.2 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 無限 unlimited 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -3.288 -3.288 (ASP) (ASP) 0.296 0.296 塑膠 plastic 1.54 1.54 55.9 55.9 -5.57 -5.57 3 3 41.328 41.328 (ASP) (ASP) 0.692 0.692 4 4 光圈 aperture 無限 unlimited -0.010 -0.010 5 5 第二透鏡 Second lens 3.878 3.878 (ASP) (ASP) 0.942 0.942 塑膠 plastic 1.54 1.54 55.9 55.9 1.79 1.79 6 6 -1.190 -1.190 (ASP) (ASP) 0.030 0.030 　　　 7 7 第三透鏡 Third lens 3.077 3.077 (ASP) (ASP) 0.260 0.260 塑膠 plastic 1.66 1.66 20.4 20.4 -4.83 -4.83 8 8 1.519 1.519 (ASP) (ASP) 0.399 0.399 　　　 9 9 第四透鏡 Fourth lens -3.494 -3.494 (ASP) (ASP) 0.850 0.850 塑膠 plastic 1.54 1.54 55.9 55.9 2.23 2.23 10 10 -0.980 -0.980 (ASP) (ASP) 0.068 0.068 　　　 11 11 第五透鏡 Fifth lens 1.800 1.800 (ASP) (ASP) 0.498 0.498 塑膠 plastic 1.66 1.66 20.4 20.4 -2.61 -2.61 12 12 0.787 0.787 (ASP) (ASP) 0.502 0.502 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.210 0.210 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.380 0.380 15 15 成像面 Imaging surface 無限 unlimited - -

表 12Table 12 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -4.9228E+01 -4.9228E + 01 -3.9194E+01 -3.9194E + 01 1.3656E+01 1.3656E + 01 -8.0403E-01 -8.0403E-01 -7.2602E+00 -7.2602E + 00 A: A: 3.6977E-01 3.6977E-01 6.4964E-01 6.4964E-01 1.1348E-02 1.1348E-02 1.7053E-01 1.7053E-01 -5.3199E-02 -5.3199E-02 B: B: -4.0806E-01 -4.0806E-01 -2.0900E-01 -2.0900E-01 -9.5845E-01 -9.5845E-01 -1.0982E+00 -1.0982E + 00 -6.1328E-01 -6.1328E-01 C: C: 5.3605E-01 5.3605E-01 -1.8776E+00 -1.8776E + 00 9.3167E+00 9.3167E + 00 3.6285E+00 3.6285E + 00 2.2338E+00 2.2338E + 00 D: D: -5.3612E-01 -5.3612E-01 1.0298E+01 1.0298E + 01 -5.8373E+01 -5.8373E + 01 -8.6111E+00 -8.6111E + 00 -4.9285E+00 -4.9285E + 00 E: E: 3.5957E-01 3.5957E-01 -2.3093E+01 -2.3093E + 01 2.0685E+02 2.0685E + 02 1.2808E+01 1.2808E + 01 6.4178E+00 6.4178E + 00 F F -1.3466E-01 -1.3466E-01 2.6299E+01 2.6299E + 01 -3.9707E+02 -3.9707E + 02 -1.1190E+01 -1.1190E + 01 -4.6486E+00 -4.6486E + 00 G G 1.9871E-02 1.9871E-02 -1.1908E+01 -1.1908E + 01 3.1816E+02 3.1816E + 02 4.1718E+00 4.1718E + 00 1.3784E+00 1.3784E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -1.6499E+00 -1.6499E + 00 4.0815E+00 4.0815E + 00 -1.3301E+00 -1.3301E + 00 -1.8272E+01 -1.8272E + 01 -4.0940E+00 -4.0940E + 00 A: A: -2.1046E-01 -2.1046E-01 1.8223E-01 1.8223E-01 1.2122E-01 1.2122E-01 -8.4584E-02 -8.4584E-02 -1.7344E-01 -1.7344E-01 B: B: 2.0871E-01 2.0871E-01 -4.1094E-01 -4.1094E-01 -1.8582E-01 -1.8582E-01 -2.5275E-01 -2.5275E-01 8.4718E-02 8.4718E-02 C: C: -2.2014E-01 -2.2014E-01 6.7951E-01 6.7951E-01 8.5215E-02 8.5215E-02 3.4693E-01 3.4693E-01 -2.5996E-02 -2.5996E-02 D: D: 2.2440E-01 2.2440E-01 -5.6707E-01 -5.6707E-01 6.2639E-02 6.2639E-02 -2.1469E-01 -2.1469E-01 4.4602E-03 4.4602E-03 E: E: -1.9168E-01 -1.9168E-01 2.5200E-01 2.5200E-01 -5.3000E-02 -5.3000E-02 7.0512E-02 7.0512E-02 -3.2383E-04 -3.2383E-04 F F 9.6602E-02 9.6602E-02 -5.4213E-02 -5.4213E-02 1.0296E-02 1.0296E-02 -1.1662E-02 -1.1662E-02 -1.6538E-05 -1.6538E-05 G G -2.0528E-02 -2.0528E-02 3.3881E-03 3.3881E-03 -1.0075E-04 -1.0075E-04 7.6188E-04 7.6188E-04 3.1120E-06 3.1120E-06

第六實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the sixth embodiment, the curve equation of the aspherical surface is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表11、以及表12可推算出下列數據：With Table 11 and Table 12, the following data can be calculated:

第六實施例 Sixth embodiment f[mm] f [mm] 2.05 2.05 R2/R1 R2 / R1 -12.570 -12.570 Fno Fno 2.2 2.2 R7/R8 R7 / R8 3.566 3.566 FOV[deg.] FOV [deg.] 124.2 124.2 CT4/CT5 CT4 / CT5 1.709 1.709 f/f1 f / f1 -0.368 -0.368 TL/f TL / f 2.496 2.496 f345/f f345 / f -7.916 -7.916 TL/IMH TL / IMH 1.744 1.744 f23/f45 f23 / f45 0.383 0.383 BFL/TL BFL / TL 0.213 0.213 f1/f2345 f1 / f2345 -3.061 -3.061 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.581 2.581 R2/f1 R2 / f1 -7.423 -7.423 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.399 -1.399

＜第七實施例＞<Seventh Embodiment>

請參照圖7A及圖7B，其中圖7A繪示依照本發明第七實施例之五片式廣角鏡片組的示意圖，圖7B由左至右依序為第七實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。由圖7A可知，五片式廣角鏡片組係包含有一光圈700和一光學組，該光學組由物側至像側依序包含第一透鏡710、第二透鏡720、第三透鏡730、第四透鏡740、第五透鏡750、紅外線濾除濾光元件770、以及成像面780，其中該五片式廣角鏡片組中具屈折力的透鏡為五片。該光圈700設置在該第一透鏡710與第二透鏡720之間。Please refer to FIG. 7A and FIG. 7B, wherein FIG. 7A is a schematic diagram of a five-piece wide-angle lens group according to a seventh embodiment of the present invention, and FIG. 7B is a five-piece wide-angle lens group of the seventh embodiment from left to right. Curved and distorted narrowing of the image plane. It can be seen from FIG. 7A that the five-piece wide-angle lens group includes an aperture 700 and an optical group, and the optical group sequentially includes the first lens 710, the second lens 720, the third lens 730, and the fourth lens from the object side to the image side. The lens 740, the fifth lens 750, the infrared filtering element 770, and the imaging surface 780. Among the five-piece wide-angle lens group, five lenses have refractive power. The aperture 700 is disposed between the first lens 710 and the second lens 720.

該第一透鏡710具有負屈折力，且為塑膠材質，其物側表面711近光軸790處為凹面，其像側表面712近光軸790處為凹面，且該物側表面711及像側表面712皆為非球面。The first lens 710 has a negative refractive power and is made of plastic. The object-side surface 711 is concave at the near optical axis 790, the image-side surface 712 is concave at the near-optical axis 790, and the object-side surface 711 and the image side The surfaces 712 are all aspherical.

該第二透鏡720具有正屈折力，且為塑膠材質，其物側表面721近光軸790處為凸面，其像側表面722近光軸790處為凸面，且該物側表面721及像側表面722皆為非球面。The second lens 720 has a positive refractive power and is made of plastic. An object-side surface 721 thereof is convex near the optical axis 790, an image-side surface 722 thereof is convex near the optical axis 790, and the object-side surface 721 and the image side The surfaces 722 are all aspherical.

該第三透鏡730具有負屈折力，且為塑膠材質，其物側表面731近光軸790處為凸面，其像側表面732近光軸790處為凹面，且該物側表面731及像側表面732皆為非球面。The third lens 730 has a negative refractive power and is made of plastic. The object-side surface 731 of the third lens 730 is convex near the optical axis 790, and its image-side surface 732 is concave at the near-light axis 790. The surfaces 732 are all aspherical.

該第四透鏡740具有正屈折力，且為塑膠材質，其物側表面741近光軸790處為凹面，其像側表面742近光軸790處為凸面，且該物側表面741及像側表面742皆為非球面。The fourth lens 740 has a positive refractive power and is made of plastic. The object-side surface 741 is concave at the near optical axis 790, the image-side surface 742 is convex at the near-optical axis 790, and the object-side surface 741 and the image side The surfaces 742 are all aspheric.

該第五透鏡750具有負屈折力，且為塑膠材質，其物側表面751近光軸790處為凸面，其像側表面752近光軸790處為凹面，且該物側表面751及像側表面752皆為非球面，且該物側表面751及該像側表面752至少一表面具有至少一反曲點。The fifth lens 750 has a negative refractive power and is made of plastic. An object-side surface 751 of the fifth lens 750 is convex near the optical axis 790, and an image-side surface 752 of the fifth lens 750 is concave near the optical axis 790. The object-side surface 751 and the image side The surface 752 is an aspheric surface, and at least one surface of the object-side surface 751 and the image-side surface 752 has at least one inflection point.

該紅外線濾除濾光元件770為玻璃材質，其設置於該第五透鏡750及成像面780間且不影響該五片式廣角鏡片組的焦距。The infrared filter element 770 is made of glass and is disposed between the fifth lens 750 and the imaging surface 780 without affecting the focal length of the five-piece wide-angle lens group.

再配合參照下列表13、以及表14。Refer to Table 13 and Table 14 below for further cooperation.

表13Table 13 第七實施例 Seventh embodiment f(焦距) =1.64 mm(公厘), Fno(光圈值) = 2.20, FOV(畫角) = 124.6 deg.(度) f (focal length) = 1.64 mm (mm), Fno (aperture value) = 2.20, FOV (angle of view) = 124.6 deg. (degrees) 表面 surface 曲率半徑 Curvature radius 厚度 thickness 材質 Material 折射率 Refractive index 色散係數 Dispersion coefficient 焦距 focal length 0 0 被攝物 Subject 無限 unlimited 900 900 1 1 無限 unlimited 0.000 0.000 2 2 第一透鏡 First lens -20.000 -20.000 (ASP) (ASP) 0.270 0.270 塑膠 plastic 1.54 1.54 55.9 55.9 -2.92 -2.92 3 3 1.742 1.742 (ASP) (ASP) 0.570 0.570 4 4 光圈 aperture 無限 unlimited -0.022 -0.022 5 5 第二透鏡 Second lens 2.787 2.787 (ASP) (ASP) 0.742 0.742 塑膠 plastic 1.54 1.54 55.9 55.9 1.72 1.72 6 6 -1.289 -1.289 (ASP) (ASP) 0.083 0.083 　　　 7 7 第三透鏡 Third lens 2.446 2.446 (ASP) (ASP) 0.250 0.250 塑膠 plastic 1.66 1.66 20.4 20.4 -6.3 -6.3 8 8 1.483 1.483 (ASP) (ASP) 0.209 0.209 　　　 9 9 第四透鏡 Fourth lens -10.397 -10.397 (ASP) (ASP) 1.008 1.008 塑膠 plastic 1.54 1.54 55.9 55.9 1.32 1.32 10 10 -0.700 -0.700 (ASP) (ASP) 0.104 0.104 　　　 11 11 第五透鏡 Fifth lens 1.487 1.487 (ASP) (ASP) 0.320 0.320 塑膠 plastic 1.66 1.66 20.4 20.4 -1.6 -1.6 12 12 0.568 0.568 (ASP) (ASP) 0.400 0.400 13 13 紅外線濾除濾光片 Infrared filter Filter 無限 unlimited 0.210 0.210 玻璃 glass 1.52 1.52 64.2 64.2 14 14 無限 unlimited 0.425 0.425 15 15 成像面 Imaging surface 無限 unlimited - -

表 14Table 14 非球面係數 Aspheric coefficient 平面 flat 2 2 3 3 5 5 6 6 7 7 K: K: -1.1102E+00 -1.1102E + 00 -9.0000E+01 -9.0000E + 01 1.1779E+00 1.1779E + 00 -1.5670E+00 -1.5670E + 00 -8.9569E+01 -8.9569E + 01 A: A: 6.6781E-01 6.6781E-01 2.6042E+00 2.6042E + 00 -1.9425E-01 -1.9425E-01 -9.3166E-01 -9.3166E-01 -6.5379E-01 -6.5379E-01 B: B: -1.0012E+00 -1.0012E + 00 -1.0859E+01 -1.0859E + 01 3.7950E+00 3.7950E + 00 3.2690E+00 3.2690E + 00 1.1033E+00 1.1033E + 00 C: C: 1.3634E+00 1.3634E + 00 4.8204E+01 4.8204E + 01 -5.2477E+01 -5.2477E + 01 -9.4016E+00 -9.4016E + 00 -1.0230E+00 -1.0230E + 00 D: D: -1.1531E+00 -1.1531E + 00 -1.3283E+02 -1.3283E + 02 3.4652E+02 3.4652E + 02 1.3593E+01 1.3593E + 01 -1.0840E+00 -1.0840E + 00 E: E: 5.0032E-01 5.0032E-01 2.1622E+02 2.1622E + 02 -1.1561E+03 -1.1561E + 03 -9.5222E+00 -9.5222E + 00 2.2128E+00 2.2128E + 00 F F -9.4180E-02 -9.4180E-02 -1.5181E+02 -1.5181E + 02 1.5025E+03 1.5025E + 03 -5.0493E-01 -5.0493E-01 -1.2595E+00 -1.2595E + 00 G G 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 平面 flat 8 8 9 9 10 10 11 11 12 12 K: K: -5.6271E+00 -5.6271E + 00 -9.9441E+01 -9.9441E + 01 -1.3830E+00 -1.3830E + 00 -2.8863E+01 -2.8863E + 01 -4.7617E+00 -4.7617E + 00 A: A: -4.4725E-01 -4.4725E-01 1.1904E-01 1.1904E-01 5.3867E-01 5.3867E-01 2.5813E-02 2.5813E-02 -1.3149E-01 -1.3149E-01 B: B: 8.8861E-01 8.8861E-01 -1.8875E-01 -1.8875E-01 -1.1232E+00 -1.1232E + 00 -4.2668E-01 -4.2668E-01 3.5653E-02 3.5653E-02 C: C: -9.8644E-01 -9.8644E-01 2.6127E-01 2.6127E-01 1.5819E+00 1.5819E + 00 5.6198E-01 5.6198E-01 7.3716E-03 7.3716E-03 D: D: 3.5156E-01 3.5156E-01 -2.7459E-01 -2.7459E-01 -1.4853E+00 -1.4853E + 00 -4.4946E-01 -4.4946E-01 -1.3795E-02 -1.3795E-02 E: E: 2.2838E-01 2.2838E-01 1.3111E-01 1.3111E-01 8.8893E-01 8.8893E-01 2.0182E-01 2.0182E-01 5.9394E-03 5.9394E-03 F F -1.7436E-01 -1.7436E-01 -2.3779E-02 -2.3779E-02 -3.0306E-01 -3.0306E-01 -4.4450E-02 -4.4450E-02 -1.1942E-03 -1.1942E-03 G G 0.0000E+00 0.0000E + 00 0.0000E+00 0.0000E + 00 4.5257E-02 4.5257E-02 3.7015E-03 3.7015E-03 9.5992E-05 9.5992E-05

第七實施例中，非球面的曲線方程式表示如第一實施例的形式。此外，下表參數的定義皆與第一實施例相同，在此不加以贅述。In the seventh embodiment, the curve equation of the aspherical surface is expressed as the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and will not be repeated here.

配合表13、以及表14可推算出下列數據：With Table 13 and Table 14, the following data can be calculated:

第七實施例 Seventh embodiment f[mm] f [mm] 1.64 1.64 R2/R1 R2 / R1 -0.087 -0.087 Fno Fno 2.2 2.2 R7/R8 R7 / R8 14.856 14.856 FOV[deg.] FOV [deg.] 124.6 124.6 CT4/CT5 CT4 / CT5 3.150 3.150 f/f1 f / f1 -0.563 -0.563 TL/f TL / f 2.779 2.779 f345/f f345 / f 3.780 3.780 TL/IMH TL / IMH 1.904 1.904 f23/f45 f23 / f45 0.681 0.681 BFL/TL BFL / TL 0.226 0.226 f1/f2345 f1 / f2345 -2.076 -2.076 f+(R3+R4)/(R3-R4) f + (R3 + R4) / (R3-R4) 2.012 2.012 R2/f1 R2 / f1 -0.596 -0.596 V4-V5 V4-V5 35.5 35.5 V2-V3 V2-V3 35.5 35.5 f1/(f2*f4) f1 / (f2 * f4) -1.278 -1.278

本發明提供的五片式廣角鏡片組，透鏡的材質可為塑膠或玻璃，當透鏡材質為塑膠，可以有效降低生產成本，另當透鏡的材質為玻璃，則可以增加五片式廣角鏡片組屈折力配置的自由度。此外，五片式廣角鏡片組中透鏡的物側表面及像側表面可為非球面，非球面可以容易製作成球面以外的形狀，獲得較多的控制變數，用以消減像差，進而縮減透鏡使用的數目，因此可以有效降低本發明五片式廣角鏡片組的總長度。In the five-piece wide-angle lens group provided by the present invention, the material of the lens can be plastic or glass. When the material of the lens is plastic, the production cost can be effectively reduced. When the material of the lens is glass, the inflection of the five-piece wide-angle lens group can be increased. Degree of freedom in force configuration. In addition, the object-side surface and image-side surface of the lens in the five-piece wide-angle lens group can be aspheric, and the aspheric surface can be easily made into a shape other than a spherical surface, and more control variables are obtained to reduce aberrations and further reduce the lens. The number used can therefore effectively reduce the total length of the five-piece wide-angle lens group of the present invention.

本發明提供的五片式廣角鏡片組中，就以具有屈折力的透鏡而言，若透鏡表面係為凸面且未界定該凸面位置時，則表示該透鏡表面於近光軸處為凸面；若透鏡表面係為凹面且未界定該凹面位置時，則表示該透鏡表面於近光軸處為凹面。In the five-piece wide-angle lens group provided by the present invention, in the case of a lens having a refractive power, if the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at the near optical axis; if When the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is concave at the near optical axis.

本發明提供的五片式廣角鏡片組更可視需求應用於移動對焦的光學系統中，並兼具優良像差修正與良好成像品質的特色，可多方面應用於3D(三維)影像擷取、數位相機、行動裝置、數位平板或車用攝影等電子影像系統中。The five-piece wide-angle lens group provided by the present invention can be more applied to the optical system of mobile focusing as required, and has both the characteristics of excellent aberration correction and good imaging quality. It can be applied to 3D (three-dimensional) image capture, digital Cameras, mobile devices, digital tablets, or automotive photography.

100、200、300、400、500、600、700‧‧‧光圈
110、210、310、410、510、610、710‧‧‧第一透鏡
111、211、311、411、511、611、711‧‧‧物側表面
112、212、312、412、512、612、712‧‧‧像側表面
120、220、320、420、520、620、720‧‧‧第二透鏡
121、221、321、421、521、621、721‧‧‧物側表面
122、222、322、422、522、622、722‧‧‧像側表面
130、230、330、430、530、630、730‧‧‧第三透鏡
131、231、331、431、531、631、731‧‧‧物側表面
132、232、332、432、532、632、732‧‧‧像側表面
140、240、340、440、540、640、740‧‧‧第四透鏡
141、241、341、441、541、641、741‧‧‧物側表面
142、242、342、442、542、642、742‧‧‧像側表面
150、250、350、450、550、650、750‧‧‧第五透鏡
151、251、351、451、551、651、751‧‧‧物側表面
152、252、352、452、552、652、752‧‧‧像側表面
160、260、360、470、570、670、770‧‧‧紅外線濾除濾光元件
180、280、380、480、580、680、780‧‧‧成像面
190、290、390、490、590、690、790‧‧‧光軸
f‧‧‧五片式廣角鏡片組的焦距
Fno‧‧‧五片式廣角鏡片組的光圈值
FOV‧‧‧五片式廣角鏡片組中最大視場角
f1‧‧‧第一透鏡的焦距
f2‧‧‧第二透鏡的焦距
f4‧‧‧第四透鏡的焦距
f23‧‧‧第二透鏡與第三透鏡的合成焦距
f45‧‧‧第四透鏡與第五透鏡的合成焦距
f345‧‧‧第三透鏡、第四透鏡與第五透鏡的合成焦距
f2345‧‧‧第二透鏡、第三透鏡、第四透鏡與第五透鏡的合成焦距
R1‧‧‧第一透鏡物側表面的曲率半徑
R2‧‧‧第一透鏡像側表面的曲率半徑
R3‧‧‧第二透鏡物側表面的曲率半徑
R4‧‧‧第二透鏡像側表面的曲率半徑
R7‧‧‧第四透鏡物側表面的曲率半徑
R8‧‧‧第四透鏡像側表面的曲率半徑
CT4‧‧‧第四透鏡於光軸上的厚度
CT5‧‧‧第五透鏡於光軸上的厚度
V2‧‧‧第二透鏡的色散係數
V3‧‧‧第三透鏡的色散係數
V4‧‧‧第四透鏡的色散係數
V5‧‧‧第五透鏡的色散係數
TL‧‧‧第一透鏡的物側表面至成像面於光軸上的距離
IMH‧‧‧五片式廣角鏡片組在成像面可擷取的成像高度
BFL‧‧‧第五透鏡的像側表面至成像面於光軸上的距離 100, 200, 300, 400, 500, 600, 700‧‧‧ aperture
110, 210, 310, 410, 510, 610, 710‧‧‧ first lens
111, 211, 311, 411, 511, 611, 711‧‧‧ object-side surface
112, 212, 312, 412, 512, 612, 712‧‧‧ image side surface
120, 220, 320, 420, 520, 620, 720‧‧‧ second lens
121, 221, 321, 421, 521, 621, 721‧‧‧ object-side surface
122, 222, 322, 422, 522, 622, 722‧‧‧ image side surface
130, 230, 330, 430, 530, 630, 730‧‧‧ third lens
131, 231, 331, 431, 531, 631, 731‧‧‧ object-side surface
132, 232, 332, 432, 532, 632, 732‧‧‧ image side surface
140, 240, 340, 440, 540, 640, 740‧‧‧ Fourth lens
141, 241, 341, 441, 541, 641, 741‧‧‧ object-side surface
142, 242, 342, 442, 542, 642, 742‧‧‧ image side surface
150, 250, 350, 450, 550, 650, 750‧‧‧ fifth lens
151, 251, 351, 451, 551, 651, 751‧‧‧ object-side surface
152, 252, 352, 452, 552, 652, 752‧‧‧ image side surface
160, 260, 360, 470, 570, 670, 770‧‧‧IR filter
180, 280, 380, 480, 580, 680, 780‧‧‧ imaging surface
190, 290, 390, 490, 590, 690, 790‧‧‧ Optical axis
f‧‧‧Focal length of five-element wide-angle lens group
Aperture value of Fno‧‧‧ five-element wide-angle lens group
Maximum field of view in FOV‧‧‧ five-element wide-angle lens group
f1‧‧‧ focal length of the first lens
f2‧‧‧ focal length of the second lens
f4‧‧‧ focal length of the fourth lens
f23‧‧‧The combined focal length of the second lens and the third lens
f45‧‧‧The combined focal length of the fourth lens and the fifth lens
f345‧‧‧The combined focal length of the third lens, the fourth lens and the fifth lens
f2345‧‧‧The combined focal lengths of the second, third, fourth, and fifth lenses
R1‧‧‧ the radius of curvature of the object-side surface of the first lens
R2‧‧‧ curvature radius of the image-side surface of the first lens
R3‧‧‧ the radius of curvature of the object-side surface of the second lens
R4‧‧‧ curvature radius of the image-side surface of the second lens
R7‧‧‧ the radius of curvature of the object-side surface of the fourth lens
R8‧‧‧The radius of curvature of the image-side surface of the fourth lens
CT4‧‧‧thickness of the fourth lens on the optical axis
CT5‧‧‧thickness of the fifth lens on the optical axis
V2‧‧‧The dispersion coefficient of the second lens
V3‧‧‧ Dispersion coefficient of the third lens
V4‧‧‧ Dispersion coefficient of the fourth lens
V5‧‧‧ fifth lens dispersion coefficient
TL‧‧‧The distance from the object-side surface of the first lens to the imaging plane on the optical axis
IMH‧‧‧ five-piece wide-angle lens group can capture the imaging height on the imaging surface
BFL‧‧‧The distance from the image side surface of the fifth lens to the imaging surface on the optical axis

圖1A係本發明第一實施例之五片式廣角鏡片組的示意圖。
圖1B由左至右依序為第一實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖2A係本發明第二實施例之五片式廣角鏡片組的示意圖。
圖2B由左至右依序為第二實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖3A係本發明第三實施例之五片式廣角鏡片組的示意圖。
圖3B由左至右依序為第三實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖4A係本發明第四實施例之五片式廣角鏡片組的示意圖。
圖4B由左至右依序為第四實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖5A係本發明第五實施例之五片式廣角鏡片組的示意圖。
圖5B由左至右依序為第五實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖6A係本發明第六實施例之五片式廣角鏡片組的示意圖。
圖6B由左至右依序為第六實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。
圖7A係本發明第七實施例之五片式廣角鏡片組的示意圖。
圖7B由左至右依序為第七實施例的五片式廣角鏡片組的像面彎曲及歪曲收差曲線圖。 FIG. 1A is a schematic diagram of a five-piece wide-angle lens group according to the first embodiment of the present invention.
FIG. 1B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group of the first embodiment in order from left to right.
FIG. 2A is a schematic diagram of a five-piece wide-angle lens group according to a second embodiment of the present invention.
FIG. 2B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group according to the second embodiment in order from left to right.
FIG. 3A is a schematic diagram of a five-piece wide-angle lens group according to a third embodiment of the present invention.
FIG. 3B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group according to the third embodiment in order from left to right.
4A is a schematic diagram of a five-piece wide-angle lens group according to a fourth embodiment of the present invention.
FIG. 4B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group according to the fourth embodiment in order from left to right.
5A is a schematic diagram of a five-piece wide-angle lens group according to a fifth embodiment of the present invention.
FIG. 5B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group of the fifth embodiment in order from left to right.
6A is a schematic diagram of a five-piece wide-angle lens group according to a sixth embodiment of the present invention.
FIG. 6B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group of the sixth embodiment in order from left to right.
7A is a schematic diagram of a five-piece wide-angle lens group according to a seventh embodiment of the present invention.
FIG. 7B is a curve diagram of the curvature and distortion of the image plane of the five-piece wide-angle lens group of the seventh embodiment in order from left to right.

Claims

A five-piece wide-angle lens group includes an aperture and an optical group composed of five lenses. The order from the object side to the image side is: a first lens having a negative refractive power, and an image side of the first lens. The surface near the optical axis is concave, and at least one of the object-side surface and the image-side surface of the first lens is aspheric; the aperture; a second lens having a positive refractive power, and the object-side surface of the second lens is near-light The axis is convex, the image-side surface of the second lens is convex near the optical axis, and at least one of the object-side surface and the image-side surface of the second lens is aspherical; a third lens has a negative refractive power, and The object-side surface of the third lens is convex at the near-optical axis, the image-side surface of the third lens is concave at the near-optical axis, and at least one of the object-side surface and the image-side surface of the third lens is aspherical; Four lenses with positive refractive power, the object side surface of the fourth lens is concave at the near optical axis, the image side surface of the fourth lens is convex at the near optical axis, and the object side surface and the image side surface of the fourth lens At least one surface is aspherical; and a fifth lens having The refractive power, the object side surface of the fifth lens is convex at the near optical axis, the image side surface of the fifth lens is concave at the near optical axis, and at least one of the object side surface and the image side surface of the fifth lens is not Spherical surface, at least one of the object-side surface and the image-side surface of the fifth lens has at least one inflection point; wherein the curvature radius of the object-side surface of the second lens is R3, and the curvature radius of the image-side surface of the second lens is R4 The overall focal length of the five-piece wide-angle lens group is f, the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the fourth lens is f4, and the following conditions are satisfied: 1.9 mm < f + (R3 + R4) / (R3-R4) <2.9 mm and -2.0 mm <f1 / (f2 * f4) <-1.2 mm.

The five-piece wide-angle lens group according to claim 1, wherein the overall focal length of the five-piece wide-angle lens group is f, the focal length of the first lens is f1, and the following conditions are satisfied: -0.68 <f / f1 <- 0.26.

The five-piece wide-angle lens group according to claim 1, wherein the combined focal length of the third lens, the fourth lens, and the fifth lens is f345, and the overall focal length of the five-piece wide-angle lens group is f, and the following conditions are satisfied: : -13.0 <f345 / f <28.5.

The five-piece wide-angle lens group according to claim 1, wherein the combined focal distance of the second lens and the third lens is f23, the combined focal distance of the fourth lens and the fifth lens is f45, and the following conditions are satisfied: 0.29 < f23 / f45 <0.87.

The five-piece wide-angle lens group according to claim 1, wherein the focal length of the first lens is f1, and the combined focal length of the second lens, the third lens, the fourth lens, and the fifth lens is f2345, and the following conditions are satisfied: : -4.0 <f1 / f2345 <-1.6.

The five-piece wide-angle lens group according to claim 1, wherein the curvature radius of the image-side surface of the first lens is R2, the focal length of the first lens is f1, and the following conditions are satisfied: -19.6 <R2 / f1 <6.7 .

The five-piece wide-angle lens group according to claim 1, wherein the curvature radius of the image-side surface of the first lens is R2, the curvature radius of the object-side surface of the first lens is R1, and the following conditions are satisfied: -34.6 <R2 /R1<13.5.

The five-piece wide-angle lens group according to claim 1, wherein the curvature radius of the object-side surface of the fourth lens is R7, the curvature radius of the image-side surface of the fourth lens is R8, and the following conditions are satisfied: 2.2 <R7 / R8 <17.8.

According to the five-piece wide-angle lens group described in claim 1, the thickness of the fourth lens on the optical axis is CT4, and the thickness of the fifth lens on the optical axis is CT5, and the following conditions are satisfied: 1.3 <CT4 / CT5 <3.8.

The five-piece wide-angle lens group according to claim 1, wherein the distance from the object-side surface of the first lens to the imaging plane on the optical axis is TL, and the overall focal length of the five-piece wide-angle lens group is f, and satisfies The following conditions: 1.9 <TL / f <3.35.

The five-piece wide-angle lens group according to claim 1, wherein the distance from the object side surface of the first lens to the imaging surface on the optical axis is TL, and the five-piece wide-angle lens group can capture images on the imaging surface. The height is IMH and meets the following conditions: 1.3 <TL / IMH <2.3.

The five-piece wide-angle lens group according to claim 1, wherein the distance from the image-side surface of the fifth lens to the imaging plane on the optical axis is BFL, and the distance from the object-side surface of the first lens to the imaging plane is on the optical axis The distance is TL and meets the following conditions: 0.14 <BFL / TL <0.27.

The five-piece wide-angle lens group according to claim 1, wherein the dispersion coefficient of the second lens is V2, and the dispersion coefficient of the third lens is V3, and the following conditions are satisfied: 30 <V2-V3 <42.

The five-piece wide-angle lens group according to claim 1, wherein the dispersion coefficient of the fourth lens is V4, and the dispersion coefficient of the fifth lens is V5, and the following conditions are satisfied: 30 <V4-V5 <42.