TW201809792A - Optical telephoto imaging lens - Google Patents
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本發明係與光學鏡頭有關,特別是指一種應用於電子產品上的小型化五片式光學攝遠成像鏡頭。The present invention relates to an optical lens, and more particularly to a miniaturized five-piece optical telephoto lens for use in an electronic product.
近年來,隨著具有攝影功能的電子產品的興起,光學系統的需求日漸提高。一般光學系統的感光元件不外乎是感光耦合元件(Charge Coupled Device,CCD)或互補性氧化金屬半導體元件(Complementary Metal-Oxide Semiconductor Sensor,CMOS Sensor)兩種,且隨著半導體製程技術的精進,使得感光元件的畫素尺寸縮小,光學系統逐漸往高畫素領域發展,因此對成像品質的要求也日益增加,同時也越來越希望配有具備攝遠功能的鏡頭。In recent years, with the rise of electronic products with photography functions, the demand for optical systems has been increasing. Generally, the photosensitive element of the optical system is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semiconductor Sensor (CMOS Sensor), and with the advancement of semiconductor process technology, As the size of the pixel of the photosensitive element is reduced and the optical system is gradually developed in the field of high pixels, the requirements for image quality are increasing, and it is increasingly desirable to have a lens with a telephoto function.
傳統搭載於電子裝置上的高畫素小型化攝影鏡頭,多採用四片式透鏡結構為主,但由於高階智慧型手機(Smart Phone)、穿戴式裝置(Wearable Device)、平板電腦(Tablet Personal Computer)與紅外線攝影鏡頭等高規格行動裝置的盛行,帶動小型化攝像鏡頭在畫素與成像品質上的要求提升,習知的四片式鏡頭組將無法滿足更高階的需求,也無法做攝遠的拍攝。The high-resolution miniaturized photographic lens that is traditionally mounted on electronic devices mainly uses a four-piece lens structure, but because of high-end smart phones, wearable devices, and tablet personal computers (Tablet Personal Computer) The prevalence of high-profile mobile devices such as infrared photographic lenses has driven the demand for pixel and imaging quality of miniaturized camera lenses. The conventional four-piece lens group will not be able to meet higher-order requirements, nor can it be used for telephoto. Shooting.
習知搭載於行動裝置,如手機,平板電腦,與可穿戴式的其他電子裝置等小型鏡頭,如US7,436,600,2013/0021677,1015/0131162等雖具有遠景拍攝功能,然而架構過於複雜與龐大,並不適合裝置於數位行動裝置,而其他五片式的小型鏡頭,如US8,000,031,US8,508,860,US8,395,851雖架構較為簡單,長度大小亦可裝置於行動裝置,然而並非為遠景拍攝用。因此持續開發出一種具有高解析能力並具備遠景拍攝功能的輕薄短小鏡頭,即是本發明研究的動機。Conventional cameras, such as mobile phones, tablets, and other wearable electronic devices, such as US7, 436, 600, 2013/0021677, 1015/0131162, etc., have a long-range shooting function, but the architecture is too complicated and huge. It is not suitable for digital mobile devices, while other five-piece small lenses, such as US8,000, 031, US8, 508, 860, and US8, 395, 851 are simple in structure and can be installed in mobile devices, but not for long-range shooting. . Therefore, it is the motivation of the present invention to continuously develop a thin and light short lens with high resolution capability and long-range shooting function.
本發明之目的在於提供一種光學攝遠成像鏡頭,尤指一種輕薄短小,且具有高解析能力並具備遠景拍攝功能的五片式光學攝遠成像鏡頭。The object of the present invention is to provide an optical telephoto lens, especially a five-piece optical telephoto lens with light and thin, high resolution and long-range shooting function.
為了達成前述目的,依據本發明所提供之一種光學攝遠成像鏡頭,係包含有一光圈和一光學組,該光學組由物側至像側依序包含:一第一透鏡,具有正屈折力,且為塑膠材質,其物側表面近光軸處為凸面,其像側表面近光軸處為凸面,其物側表面及像側表面皆為非球面;一第二透鏡,具有負屈折力,且為塑膠材質,其物側表面近光軸處為凹面,其像側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第三透鏡,具有屈折力,且為塑膠材質,其像側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第四透鏡,具有負屈折力,且為塑膠材質,其物側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第五透鏡,具有正屈折力,且為塑膠材質,其物側表面的周邊處為凹面,其物側表面及像側表面皆為非球面;In order to achieve the foregoing objective, an optical telephoto imaging lens according to the present invention includes an aperture and an optical group, the optical group sequentially including from the object side to the image side: a first lens having a positive refractive power, The plastic material has a convex surface on the near-optical axis of the object side surface, a convex surface on the near-optical axis of the image side surface, and an object surface and an image side surface are aspherical surfaces; a second lens has a negative refractive power, And the plastic material has a concave surface at the near-optical axis of the object side surface, and the image side surface has a concave surface at the near-optical axis, and the object side surface and the image side surface are all aspherical surfaces; a third lens has a refractive power, and The plastic material has a concave surface at the near-optical axis of the image side surface, and the object side surface and the image side surface are all aspherical surfaces; a fourth lens has a negative refractive power and is made of a plastic material, and the object side surface is near the optical axis. The concave surface, the object side surface and the image side surface are all aspherical surfaces; a fifth lens has a positive refractive power and is made of a plastic material, and the periphery of the object side surface is a concave surface, and the object side surface and the image side surface thereof All are aspherical;
其中該第一透鏡的焦距為f1,該第二透鏡的焦距為f2,該第三透鏡的焦距為f3,該第四透鏡的焦距為f4,該第五透鏡的焦距為f5,該第二透鏡的物側表面曲率半徑為R3,該第二透鏡的像側表面曲率半徑為R4,並滿足下列條件:Wherein the focal length of the first lens is f1, the focal length of the second lens is f2, the focal length of the third lens is f3, the focal length of the fourth lens is f4, and the focal length of the fifth lens is f5, the second lens The radius of curvature of the object side surface is R3, and the radius of curvature of the image side surface of the second lens is R4, and the following conditions are satisfied:
|fn|>|f4|>|f2|>|f1|,其中n=3及5;0 < (R3+R4) / (R3-R4) < 0.5。|fn|>|f4|>|f2|>|f1|, where n=3 and 5; 0 < (R3+R4) / (R3-R4) < 0.5.
當|fn|>|f4|>|f2|>|f1|滿足上述條件時,可使各透鏡的折射力均勻配置,藉以達到遠景拍攝的目的,並使鏡頭小型化,便於裝載於行動裝置中。When |fn|>|f4|>|f2|>|f1| satisfies the above conditions, the refractive power of each lens can be uniformly arranged, thereby achieving the purpose of long-range shooting, and miniaturizing the lens for loading in a mobile device. .
當(R3+R4) / (R3-R4) 滿足上述條件時,有效降低該光學攝遠成像鏡頭的球差與像散。When (R3+R4) / (R3-R4) satisfies the above conditions, the spherical aberration and astigmatism of the optical telephoto lens are effectively reduced.
較佳地,該第二透鏡的色散係數為V2,該第三透鏡的色散係數為V3,該第五透鏡的色散係數為V5,並滿足下列條件:25 < V3–V2 < 40;25 < V3–V5 < 40。藉此,有效降低該光學攝遠成像鏡頭的色差。Preferably, the second lens has a dispersion coefficient of V2, the third lens has a dispersion coefficient of V3, and the fifth lens has a dispersion coefficient of V5 and satisfies the following conditions: 25 < V3 - V2 < 40; 25 < V3 –V5 < 40. Thereby, the chromatic aberration of the optical telephoto lens is effectively reduced.
較佳地,該光圈到第五透鏡的像側表面於光軸上的距離為SD,該第一透鏡的物側表面到該第五透鏡的像側表面於光軸上的距離為TD,並滿足下列條件:0.55 < SD/TD < 0.9。藉此,適當配置光圈位置,可使進入電子感光元件的主光線符合電子感光元件,減少色偏移現象,並使像面周邊有較佳的相對照度,減少暗角產生。Preferably, the distance from the aperture to the image side surface of the fifth lens on the optical axis is SD, and the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, and The following conditions are satisfied: 0.55 < SD/TD < 0.9. Thereby, the position of the aperture can be properly arranged, the main light entering the electronic photosensitive element can be matched with the electronic photosensitive element, the color shift phenomenon can be reduced, and the contrast of the image surface can be better, and the vignetting can be reduced.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡的焦距為f1,並滿足下列條件:0.25 < f1/f < 0.5。藉此,讓第一透鏡折射力維持在適當範圍,並使該光學攝遠成像鏡頭的最大視場角(FOV)維持在適當角度,同時降低第一透鏡的組裝感度。Preferably, the optical focal length imaging lens has an overall focal length of f, the first lens has a focal length of f1, and satisfies the following condition: 0.25 < f1/f < 0.5. Thereby, the refractive power of the first lens is maintained in an appropriate range, and the maximum angle of view (FOV) of the optical telephoto lens is maintained at an appropriate angle while reducing the assembly sensitivity of the first lens.
較佳地,該第三透鏡的焦距為f3,該第五透鏡的焦距為f5,並滿足下列條件:|1/f3| + |1/f5|< 0.35。藉此,適當焦距的配置,有助於縮短該光學攝遠成像鏡頭的長度,更進一步達到遠景拍攝的目的,且能適當控制通過光學鏡片組中的光束,在適當距離到達成像區域。Preferably, the third lens has a focal length of f3, and the fifth lens has a focal length of f5 and satisfies the following condition: |1/f3| + |1/f5|< 0.35. Thereby, the proper focal length configuration helps to shorten the length of the optical telephoto lens, further achieves the purpose of long-range shooting, and can appropriately control the light beam passing through the optical lens group to reach the imaging region at an appropriate distance.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第五透鏡的物側表面曲率半徑為R9,並滿足下列條件:|f/R9| < 1。藉此,配合適當的非球面量,可適度修正場曲,並易於控制在第五透鏡各表面上因內反射所產生的鬼影現像。Preferably, the optical focal length imaging lens has an overall focal length of f, and the object side surface of the fifth lens has a radius of curvature of R9 and satisfies the following condition: |f/R9| < 1. Thereby, the field curvature can be appropriately corrected in accordance with the appropriate aspheric amount, and it is easy to control the ghost image generated by the internal reflection on each surface of the fifth lens.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡的物側表面到成像面於光軸上的距離為TTL,並滿足下列條件:0.75 < TTL/ f < 1。藉此,達到遠景拍攝的目的,並使該光學攝遠成像鏡頭輕薄短小,以有效維持該光學攝遠成像鏡頭的小型化。Preferably, the optical focal length imaging lens has an overall focal length f, and the distance from the object side surface of the first lens to the imaging surface on the optical axis is TTL, and the following condition is satisfied: 0.75 < TTL / f < 1. Thereby, the purpose of the distant shooting is achieved, and the optical telephoto lens is light and thin, so as to effectively maintain the miniaturization of the optical telephoto lens.
較佳地,該光學攝遠成像鏡頭的最大視場角為FOV,並滿足下列條件:30度 < FOV < 50度。藉此,使該光學攝遠成像鏡頭可具有適當之攝遠視場角。Preferably, the maximum field of view of the optical telephoto lens is FOV and satisfies the following conditions: 30 degrees < FOV < 50 degrees. Thereby, the optical telephoto lens can have an appropriate telephoto field angle.
另外,同樣為了達成前述目的,依據本發明所提供之一種光學攝遠成像鏡頭,係包含有一光圈和一光學組,該光學組由物側至像側依序包含:一第一透鏡,具有正屈折力,且為塑膠材質,其物側表面近光軸處為凸面,其像側表面近光軸處為凸面,其物側表面及像側表面皆為非球面;一第二透鏡,具有負屈折力,且為塑膠材質,其物側表面近光軸處為凹面,其像側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第三透鏡,具有屈折力,且為塑膠材質,其像側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第四透鏡,具有負屈折力,且為塑膠材質,其物側表面近光軸處為凹面,其物側表面及像側表面皆為非球面;一第五透鏡,具有屈折力,且為塑膠材質,其物側表面的周邊處為凹面,其物側表面及像側表面皆為非球面;In addition, in order to achieve the foregoing object, an optical telephoto imaging lens according to the present invention includes an aperture and an optical group, and the optical group includes, in order from the object side to the image side, a first lens having a positive The refractive power is a plastic material, and the object side surface is convex at the near optical axis, and the image side surface is convex at the near optical axis, and the object side surface and the image side surface are aspherical surfaces; a second lens has a negative The refractive power is a plastic material, and the object side surface is concave at the near optical axis, and the image side surface is concave at the near optical axis, and the object side surface and the image side surface are aspherical surfaces; a third lens has a refractive index The force is a plastic material, and the side surface of the image has a concave surface at the near-optical axis, and the object side surface and the image side surface are aspherical surfaces; a fourth lens has a negative refractive power and is a plastic material, and the object side surface thereof The near-optical axis is a concave surface, and the object side surface and the image side surface are all aspherical surfaces; a fifth lens has a refractive power and is made of a plastic material, and the periphery of the object side surface is a concave surface, and the object side surface and the image thereof The side surfaces are all aspherical;
其中該光學攝遠成像鏡頭的整體焦距為f,該第三透鏡的焦距為f3,該第五透鏡的焦距為f5,該第五透鏡的物側表面曲率半徑為R9,該第二透鏡的色散係數為V2,該第三透鏡的色散係數為V3,該第五透鏡的色散係數為V5,並滿足下列條件:Wherein the optical focal length imaging lens has an overall focal length of f, the third lens has a focal length of f3, the fifth lens has a focal length of f5, and the fifth lens has an object side surface having a radius of curvature of R9, and the second lens has a dispersion. The coefficient is V2, the dispersion coefficient of the third lens is V3, the dispersion coefficient of the fifth lens is V5, and the following conditions are satisfied:
|1/f3| + |1/f5|< 0.35;|f/R9|< 1;25 < V3–V2 < 40;25 < V3–V5 < 40。|1/f3| + |1/f5|< 0.35;|f/R9|< 1;25 < V3–V2 < 40;25 < V3–V5 < 40.
當|1/f3| + |1/f5|滿足上述條件時,藉由適當焦距的配置,有助於縮短該光學攝遠成像鏡頭的長度,更進一步達到遠景拍攝的目的,且能適當控制通過光學鏡片組中的光束,在適當距離到達成像區域。When |1/f3| + |1/f5| satisfies the above conditions, the configuration of the appropriate focal length helps to shorten the length of the optical telephoto lens, and further achieves the purpose of long-range shooting, and can be appropriately controlled. The light beam in the optical lens set reaches the imaging area at an appropriate distance.
當|f/R9|< 1滿足上述條件時,配合適當的非球面量,可適度修正場曲,並易於控制在第五透鏡各表面上因內反射所產生的鬼影現像。When |f/R9|< 1 satisfies the above conditions, the field curvature can be appropriately corrected in accordance with an appropriate aspheric amount, and it is easy to control the ghost image generated by internal reflection on each surface of the fifth lens.
當25 < V3–V2 < 40;25 < V3–V5 < 40滿足上述條件時,有效降低該光學攝遠成像鏡頭的色差。When 25 < V3 - V2 < 40; 25 < V3 - V5 < 40 satisfying the above conditions, the chromatic aberration of the optical telephoto lens is effectively reduced.
較佳地,該光圈到第五透鏡的像側表面於光軸上的距離為SD,該第一透鏡的物側表面到該第五透鏡的像側表面於光軸上的距離為TD,並滿足下列條件:0.55 < SD/TD < 0.9。藉此,適當配置光圈位置,可使進入電子感光元件的主光線符合電子感光元件,減少色偏移現象,並使像面周邊有較佳的相對照度,減少暗角產生。Preferably, the distance from the aperture to the image side surface of the fifth lens on the optical axis is SD, and the distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis is TD, and The following conditions are satisfied: 0.55 < SD/TD < 0.9. Thereby, the position of the aperture can be properly arranged, the main light entering the electronic photosensitive element can be matched with the electronic photosensitive element, the color shift phenomenon can be reduced, and the contrast of the image surface can be better, and the vignetting can be reduced.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡的焦距為f1,並滿足下列條件:0.25 < f1/f < 0.5。藉此,讓第一透鏡折射力維持在適當範圍,並使該光學攝遠成像鏡頭的最大視場角(FOV)維持在適當角度,同時降低第一透鏡的組裝感度。Preferably, the optical focal length imaging lens has an overall focal length of f, the first lens has a focal length of f1, and satisfies the following condition: 0.25 < f1/f < 0.5. Thereby, the refractive power of the first lens is maintained in an appropriate range, and the maximum angle of view (FOV) of the optical telephoto lens is maintained at an appropriate angle while reducing the assembly sensitivity of the first lens.
較佳地,該第一透鏡的物側表面曲率半徑為R1,該第一透鏡的像側表面曲率半徑為R2,並滿足下列條件:-0.6 < (R1+R2) / (R1-R2) < -0.35。藉此,降低該光學攝遠成像鏡頭的像差,並有較佳的偏心感度。Preferably, the curvature radius of the object side surface of the first lens is R1, and the radius of curvature of the image side surface of the first lens is R2, and the following condition is satisfied: -0.6 < (R1+R2) / (R1-R2) < -0.35. Thereby, the aberration of the optical telephoto lens is reduced, and the eccentricity is better.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第四透鏡的焦距為f4,並滿足下列條件:-2.0 < f4/f < -0.5。藉此,使第四透鏡的折射力維持在適當範圍,並適度分散第五透鏡的折射力,以降低地四透鏡與第五透鏡的組裝感度。Preferably, the optical focal length imaging lens has an overall focal length of f, and the fourth lens has a focal length of f4 and satisfies the following condition: -2.0 < f4/f < -0.5. Thereby, the refractive power of the fourth lens is maintained in an appropriate range, and the refractive power of the fifth lens is appropriately dispersed to reduce the assembly sensitivity of the fourth lens and the fifth lens.
較佳地,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡的物側表面到成像面於光軸上的距離為TTL,並滿足下列條件:0.75 < TTL/ f < 1。藉此,達到遠景拍攝的目的,並使該光學攝遠成像鏡頭輕薄短小,以有效維持該光學攝遠成像鏡頭的小型化。Preferably, the optical focal length imaging lens has an overall focal length f, and the distance from the object side surface of the first lens to the imaging surface on the optical axis is TTL, and the following condition is satisfied: 0.75 < TTL / f < 1. Thereby, the purpose of the distant shooting is achieved, and the optical telephoto lens is light and thin, so as to effectively maintain the miniaturization of the optical telephoto lens.
較佳地,該光學攝遠成像鏡頭的最大視場角為FOV,並滿足下列條件:30度 < FOV < 50度。藉此,使該光學攝遠成像鏡頭可具有適當之攝遠視場角。Preferably, the maximum field of view of the optical telephoto lens is FOV and satisfies the following conditions: 30 degrees < FOV < 50 degrees. Thereby, the optical telephoto lens can have an appropriate telephoto field angle.
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,茲舉八較佳可行實施例並配合圖式詳細說明如後。The present invention has been described with reference to the preferred embodiments of the present invention and the accompanying 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光學攝遠成像鏡頭的示意圖,圖1B由左至右依序為第一實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖1A可知,光學攝遠成像鏡頭係包含有一光圈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170、以及成像面180,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈100設置在該第一透鏡110和第二透鏡120之間。1A and FIG. 1B, FIG. 1A is a schematic diagram of an optical telephoto lens according to a first embodiment of the present invention, and FIG. 1B is a ball from the left to the right of the optical telephoto lens of the first embodiment. Difference, astigmatism and distortion curves. As can be seen from FIG. 1A, the optical telephoto lens includes an aperture 100 and an optical group. The optical group sequentially includes a first lens 110, a second lens 120, a third lens 130, and a fourth lens from the object side to the image side. 140, a fifth lens 150, an infrared filter element 170, and an imaging surface 180, wherein the lens of the optical telephoto lens has a refractive power of five. The aperture 100 is disposed between the first lens 110 and the second lens 120.
該第一透鏡110具有正屈折力,且為塑膠材質,其物側表面111近光軸190處為凸面,其像側表面112近光軸190處為凸面,且該物側表面111及像側表面112皆為非球面。The first lens 110 has a positive refractive power and is made of a plastic material. The object side surface 111 is convex at the near optical axis 190, and the image side surface 112 is convex at the near optical axis 190, and the object side surface 111 and the image side are Surface 112 is aspherical.
該第二透鏡120具有負屈折力,且為塑膠材質,其物側表面121近光軸190處為凹面,其像側表面122近光軸190處為凹面,且該物側表面121及像側表面122皆為非球面。The second lens 120 has a negative refractive power and is made of a plastic material. The object side surface 121 is a concave surface at the near optical axis 190, and the image side surface 122 is concave at the near optical axis 190, and the object side surface 121 and the image side are Surface 122 is aspherical.
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 a plastic material. The object side surface 131 is convex at the near optical axis 190, and the image side surface 132 is concave at the near optical axis 190, and the object side surface 131 and the image side are The surfaces 132 are all aspherical.
該第四透鏡140具有負屈折力,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處為凹面,且該物側表面141及像側表面142皆為非球面。The fourth lens 140 has a negative refractive power and is made of a plastic material. The object side surface 141 is concave at the near optical axis 190, and the image side surface 142 is concave at the near optical axis 190, and the object side surface 141 and the image side are Surfaces 142 are all aspherical.
該第五透鏡150具有正屈折力,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處為凸面,且該物側表面151及像側表面152皆為非球面,本實施例中,該第五透鏡150的物側表面151的周邊處為凹面,也就是該第五透鏡150物側表面151由近光軸190處至周邊處存在由凸面轉凹面的變化。The fifth lens 150 has a positive refractive power and is made of a plastic material. The object side surface 151 is convex at the near optical axis 190, and the image side surface 152 is convex at the near optical axis 190, and the object side surface 151 and the image side are The surface 152 is aspherical. In this embodiment, the periphery of the object side surface 151 of the fifth lens 150 is concave, that is, the object side surface 151 of the fifth lens 150 is present from the near optical axis 190 to the periphery. The change in the convex to concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 170 is made of glass and disposed between the fifth lens 150 and the imaging surface 180 without affecting the focal length of the optical telephoto lens.
上述各透鏡的非球面的曲線方程式表示如下:The aspherical 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A4 ,A6 ,A8 ,A10 ,A12 ,A14 分別是四、六、八、十、十二、及十四階的非球面係數。Where z is the position value with reference to the surface apex at a position of height h in the direction of the optical axis 190; c is the curvature of the lens surface near the optical axis 190, and is the reciprocal of the radius of curvature (R) (c = 1/R) R is the radius of curvature of the lens surface near the optical axis 190, h is the vertical distance of the lens surface from the optical axis 190, k is a conic constant, and A 4 , A 6 , A 8 , A 10 , A 12 , A 14 is an aspheric coefficient of four, six, eight, ten, twelve, and fourteenth steps, respectively.
第一實施例的光學攝遠成像鏡頭中,光學攝遠成像鏡頭的焦距為f,光學攝遠成像鏡頭的光圈值(f-number)為Fno,光學攝遠成像鏡頭中最大視場角的一半為HFOV,其數值如下:f=6.56(公厘);Fno= 2.65;以及HFOV= 21.76(度)。In the optical telephoto lens of the first embodiment, the focal length of the optical telephoto lens is f, the aperture value (f-number) of the optical telephoto lens is Fno, and the maximum angle of view of the optical telephoto lens is half. For HFOV, the values are as follows: f = 6.56 (mm); Fno = 2.65; and HFOV = 21.76 (degrees).
第一實施例的光學攝遠成像鏡頭中,該第一透鏡110的焦距為f1,該第二透鏡120的焦距為f2,該第三透鏡130的焦距為f3,該第四透鏡140的焦距為f4,該第五透鏡150的焦距為f5,並滿足下列條件:|fn|>|f4|>|f2|>|f1|,其中n=3及5,且|f1|=2.38,|f2|=2.88,|f3|=39.36,|f4|=5.68,|f5|=12.91。In the optical telephoto lens 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 third lens 130 is f3, and the focal length of the fourth lens 140 is F4, the focal length of the fifth lens 150 is f5, and satisfies the following condition: |fn|>|f4|>|f2|>|f1|, where n=3 and 5, and |f1|=2.38,|f2| =2.88,|f3|=39.36,|f4|=5.68,|f5|=12.91.
第一實施例的光學攝遠成像鏡頭中,該第二透鏡120的物側表面121曲率半徑為R3,該第二透鏡120的像側表面122曲率半徑為R4,並滿足下列條件:(R3+R4) / (R3-R4) =0.27。In the optical telephoto lens of the first embodiment, the object side surface 121 of the second lens 120 has a radius of curvature R3, and the image side surface 122 of the second lens 120 has a radius of curvature of R4 and satisfies the following conditions: (R3+ R4) / (R3-R4) = 0.27.
第一實施例的光學攝遠成像鏡頭中,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,該第五透鏡150的色散係數為V5,並滿足下列條件:V3–V2 =32.0;V3–V5 =34。In the optical telephoto lens of the first embodiment, the second lens 120 has a dispersion coefficient of V2, the third lens 130 has a dispersion coefficient of V3, and the fifth lens 150 has a dispersion coefficient of V5, and satisfies the following conditions: V3–V2 = 32.0; V3–V5 = 34.
第一實施例的光學攝遠成像鏡頭中,該光圈100到第五透鏡150的像側表面152於光軸190上的距離為SD,該第一透鏡110的物側表面111到該第五透鏡150的像側表面152於光軸190上的距離為TD,並滿足下列條件:SD/TD =0.74。In the optical telephoto lens of the first embodiment, the distance from the image side surface 152 of the aperture 100 to the fifth lens 150 to the optical axis 190 is SD, and the object side surface 111 of the first lens 110 to the fifth lens The image side surface 152 of 150 has a distance TD on the optical axis 190 and satisfies the following condition: SD/TD = 0.74.
第一實施例的光學攝遠成像鏡頭中,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡110的焦距為f1,並滿足下列條件:f1/f =0.36。In the optical telephoto lens of the first embodiment, the overall focal length of the optical telephoto lens is f, the focal length of the first lens 110 is f1, and the following condition is satisfied: f1/f = 0.36.
第一實施例的光學攝遠成像鏡頭中,該第三透鏡130的焦距為f3,該第五透鏡150的焦距為f5,並滿足下列條件:|1/f3| + |1/f5|=0.10。In the optical telephoto lens of the first embodiment, the focal length of the third lens 130 is f3, the focal length of the fifth lens 150 is f5, and the following conditions are satisfied: |1/f3| + |1/f5|=0.10 .
第一實施例的光學攝遠成像鏡頭中,該光學攝遠成像鏡頭的整體焦距為f,該第五透鏡150的物側表面151曲率半徑為R9,並滿足下列條件:|f/R9| =0.21。In the optical telephoto lens of the first embodiment, the optical focal length imaging lens has an overall focal length of f, and the object side surface 151 of the fifth lens 150 has a radius of curvature of R9 and satisfies the following condition: |f/R9| 0.21.
第一實施例的光學攝遠成像鏡頭中,該光學攝遠成像鏡頭的整體焦距為f,該第一透鏡110的物側表面111到成像面180於光軸190上的距離為TTL,並滿足下列條件:TTL/ f =0.88。In the optical telephoto lens of the first embodiment, the overall focal length of the optical telephoto lens is f, and the distance from the object side surface 111 of the first lens 110 to the imaging surface 180 on the optical axis 190 is TTL and satisfies The following conditions are: TTL/ f =0.88.
第一實施例的光學攝遠成像鏡頭中,其中該第一透鏡110的物側表面111曲率半徑為R1,該第一透鏡110的像側表面112曲率半徑為R2,並滿足下列條件: (R1+R2) / (R1-R2) =-0.49。In the optical telephoto lens of the first embodiment, the object side surface 111 of the first lens 110 has a radius of curvature R1, and the image side surface 112 of the first lens 110 has a radius of curvature R2 and satisfies the following conditions: (R1 +R2) / (R1-R2) = -0.49.
第一實施例的光學攝遠成像鏡頭中,其中該光學攝遠成像鏡頭的整體焦距為f,該第四透鏡140的焦距為f4,並滿足下列條件: f4/f =-0.87。In the optical telephoto lens of the first embodiment, wherein the optical focal length imaging lens has an overall focal length of f, the focal length of the fourth lens 140 is f4, and the following condition is satisfied: f4/f = -0.87.
再配合參照下列表1及表2。Refer to Table 1 and Table 2 below for reference.
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0-14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,A4-A16則表示各表面第4-16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, in which the unit of curvature radius, thickness and focal length is mm, and the surface 0-14 sequentially represents the surface from the object side to the image side. Table 2 shows the aspherical surface data in the first embodiment, in which the cone surface coefficient in the a-spherical curve equation of k, and A4-A16 represents the 4-16th-order aspherical coefficient of each surface. In addition, the table of the following embodiments corresponds to the schematic diagram and the aberration diagram of each embodiment, and the definition of the data in the table is the same as the definitions of Table 1 and Table 2 of the first embodiment, and details are not described herein.
<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光學攝遠成像鏡頭的示意圖,圖2B由左至右依序為第二實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖2A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈200設置在該第二透鏡220與第三透鏡230之間。Please refer to FIG. 2A and FIG. 2B , wherein FIG. 2A is a schematic diagram of an optical telephoto lens according to a second embodiment of the present invention, and FIG. 2B is a ball of the optical telephoto lens of the second embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 2A, the optical telephoto lens includes an aperture 200 and an optical group. 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. 240, a fifth lens 250, an infrared filter element 270, and an imaging surface 280, wherein the lens of the optical telephoto lens has a refractive power of five. The aperture 200 is disposed between the second lens 220 and the third lens 230.
該第一透鏡210具有正屈折力,且為塑膠材質,其物側表面211近光軸290處為凸面,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 positive refractive power and is made of a plastic material. The object side surface 211 is convex at the near optical axis 290, and the image side surface 212 is convex at the near optical axis 290, and the object side surface 211 and the image side are Surface 212 is aspherical.
該第二透鏡220具有負屈折力,且為塑膠材質,其物側表面221近光軸290處為凹面,其像側表面222近光軸290處為凹面,且該物側表面221及像側表面222皆為非球面。The second lens 220 has a negative refractive power and is made of a plastic material. The object side surface 221 is concave at the near optical axis 290, and the image side surface 222 is concave at the near optical axis 290, and the object side surface 221 and the image side are Surfaces 222 are all aspherical.
該第三透鏡230具有正屈折力,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 positive refractive power and is made of a plastic material. The object side surface 231 is convex at the near optical axis 290, and the image side surface 232 is concave at the near optical axis 290, and the object side surface 231 and the image side are Surfaces 232 are all aspherical.
該第四透鏡240具有負屈折力,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處為凹面,且該物側表面241及像側表面242皆為非球面。The fourth lens 240 has a negative refractive power and is made of a plastic material. The object side surface 241 is concave at the near optical axis 290, and the image side surface 242 is concave at the near optical axis 290, and the object side surface 241 and the image side are Surface 242 is aspherical.
該第五透鏡250具有正屈折力,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,本實施例中,該第五透鏡250的物側表面251的周邊處為凹面,也就是該第五透鏡250物側表面251由近光軸290處至周邊處存在由凸面轉凹面的變化。The fifth lens 250 has a positive refractive power and is made of a plastic material. The object side surface 251 is convex at the near optical axis 290, and the image side surface 252 is concave at the near optical axis 290, and the object side surface 251 and the image side are The surface 252 is aspherical. In this embodiment, the periphery of the object side surface 251 of the fifth lens 250 is concave, that is, the object side surface 251 of the fifth lens 250 is present from the near optical axis 290 to the periphery. The change in the convex to concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 270 is made of glass and disposed between the fifth lens 250 and the imaging surface 280 without affecting the focal length of the optical imaging lens.
再配合參照下列表3、以及表4。Refer to Table 3 and Table 4 below.
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 represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
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 derived:
<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光學攝遠成像鏡頭的示意圖,圖3B由左至右依序為第三實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖3A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈300設置在該第二透鏡320與第三透鏡330之間。Please refer to FIG. 3A and FIG. 3B , wherein FIG. 3A is a schematic diagram of an optical telephoto lens according to a third embodiment of the present invention, and FIG. 3B is a ball of the optical telephoto lens of the third embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 3A, the optical telephoto lens includes an aperture 300 and an optical group. The optical group sequentially includes a first lens 310, a second lens 320, a third lens 330, and a fourth lens from the object side to the image side. 340. The fifth lens 350, the infrared filter element 370, and the imaging surface 380, wherein the lens of the optical telephoto lens has a refractive power of five. The aperture 300 is disposed between the second lens 320 and the third lens 330.
該第一透鏡310具有正屈折力,且為塑膠材質,其物側表面311近光軸390處為凸面,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 positive refractive power and is made of a plastic material. The object side surface 311 is convex at the near optical axis 390, and the image side surface 312 is convex at the near optical axis 390, and the object side surface 311 and the image side are Surfaces 312 are all aspherical.
該第二透鏡320具有負屈折力,且為塑膠材質,其物側表面321近光軸390處為凹面,其像側表面322近光軸390處為凹面,且該物側表面321及像側表面322皆為非球面。The second lens 320 has a negative refractive power and is made of a plastic material. The object side surface 321 is concave at the near optical axis 390, and the image side surface 322 is concave at the near optical axis 390, and the object side surface 321 and the image side are Surfaces 322 are all aspherical.
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 a plastic material. The object side surface 331 is convex at the near optical axis 390, and the image side surface 332 is concave at the near optical axis 390, and the object side surface 331 and the image side are Surface 332 is aspherical.
該第四透鏡340具有負屈折力,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 negative refractive power and is made of a plastic material, and the object side surface 341 is concave at the near optical axis 390, and the image side surface 342 is convex at the near optical axis 390, and the object side surface 341 and the image side are Surfaces 342 are all aspherical.
該第五透鏡350具有正屈折力,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,本實施例中,該第五透鏡350的物側表面351的周邊處為凹面,也就是該第五透鏡350物側表面351由近光軸390處至周邊處存在由凸面轉凹面的變化。The fifth lens 350 has a positive refractive power and is made of a plastic material. The object side surface 351 is convex at the near optical axis 390, and the image side surface 352 is concave at the near optical axis 390, and the object side surface 351 and the image side are The surface 352 is aspherical. In this embodiment, the periphery of the object-side surface 351 of the fifth lens 350 is concave, that is, the object side surface 351 of the fifth lens 350 is present from the near-optical axis 390 to the periphery. The change in the convex to concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 370 is made of glass and disposed between the fifth lens 350 and the imaging surface 380 without affecting the focal length of the optical telephoto lens.
再配合參照下列表5、以及表6。Refer to Table 5 and Table 6 below for reference.
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 represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
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 derived:
<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光學攝遠成像鏡頭的示意圖,圖4B由左至右依序為第四實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖4A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈400設置在該第二透鏡420與第三透鏡430之間。Please refer to FIG. 4A and FIG. 4B , wherein FIG. 4A is a schematic diagram of an optical telephoto lens according to a fourth embodiment of the present invention, and FIG. 4B is a ball of the optical telephoto lens of the fourth embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 4A, the optical telephoto lens includes an aperture 400 and an optical group. The optical group sequentially includes a first lens 410, a second lens 420, a third lens 430, and a fourth lens from the object side to the image side. 440, a fifth lens 450, an infrared filter element 470, and an imaging surface 480, wherein the lens having a refractive power in the optical telephoto lens is five pieces. The aperture 400 is disposed between the second lens 420 and the third lens 430.
該第一透鏡410具有正屈折力,且為塑膠材質,其物側表面411近光軸490處為凸面,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 positive refractive power and is made of a plastic material. The object side surface 411 is convex at the near optical axis 490, and the image side surface 412 is convex at the near optical axis 490, and the object side surface 411 and the image side are Surface 412 is aspherical.
該第二透鏡420具有負屈折力,且為塑膠材質,其物側表面421近光軸490處為凹面,其像側表面422近光軸490處為凹面,且該物側表面421及像側表面422皆為非球面。The second lens 420 has a negative refractive power and is made of a plastic material. The object side surface 421 is concave at the near optical axis 490, and the image side surface 422 is concave at the near optical axis 490, and the object side surface 421 and the image side are Surface 422 is 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 a plastic material. The object side surface 431 is convex at the near optical axis 490, and the image side surface 432 is concave at the near optical axis 490, and the object side surface 431 and the image side are Surface 432 is aspherical.
該第四透鏡440具有負屈折力,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 negative refractive power and is made of a plastic material. The object side surface 441 is concave at the near optical axis 490, and the image side surface 442 is convex at the near optical axis 490, and the object side surface 441 and the image side are Surface 442 is aspherical.
該第五透鏡450具有正屈折力,且為塑膠材質,其物側表面451近光軸490處為凹面,其像側表面452近光軸490處為凸面,且該物側表面451及像側表面452皆為非球面,本實施例中,該第五透鏡450的物側表面451的周邊處也為凹面。The fifth lens 450 has a positive refractive power and is made of a plastic material. The object side surface 451 is concave at the near optical axis 490, and the image side surface 452 is convex at the near optical axis 490, and the object side surface 451 and the image side are The surface 452 is aspherical. In the embodiment, the periphery of the object side surface 451 of the fifth lens 450 is also a concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 470 is made of glass and disposed between the fifth lens 450 and the imaging surface 480 without affecting the focal length of the optical telephoto lens.
再配合參照下列表7、以及表8。Refer to Table 7 and Table 8 below for reference.
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 aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
配合表7、以及表8可推算出下列數據:The following data can be derived from Table 7 and Table 8:
<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光學攝遠成像鏡頭的示意圖,圖5B由左至右依序為第五實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖5A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈500設置在該第二透鏡520與第三透鏡530之間。5A and 5B, wherein FIG. 5A is a schematic diagram of an optical telephoto lens according to a fifth embodiment of the present invention, and FIG. 5B is a ball of the optical telephoto lens of the fifth embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 5A, the optical telephoto lens includes an aperture 500 and an optical group. The optical group sequentially includes a first lens 510, a second lens 520, a third lens 530, and a fourth lens from the object side to the image side. 540. The fifth lens 550, the infrared filter element 570, and the imaging surface 580, wherein the lens having the refractive power in the optical telephoto lens is five pieces. The aperture 500 is disposed between the second lens 520 and the third lens 530.
該第一透鏡510具有正屈折力,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處為凸面,且該物側表面511及像側表面512皆為非球面。The first lens 510 has a positive refractive power and is made of a plastic material. The object side surface 511 is convex at the near optical axis 590, and the image side surface 512 is convex at the near optical axis 590, and the object side surface 511 and the image side are Surface 512 is aspherical.
該第二透鏡520具有負屈折力,且為塑膠材質,其物側表面521近光軸590處為凹面,其像側表面522近光軸590處為凹面,且該物側表面521及像側表面522皆為非球面。The second lens 520 has a negative refractive power and is made of a plastic material. The object side surface 521 is concave at the near optical axis 590, and the image side surface 522 is concave at the near optical axis 590, and the object side surface 521 and the image side are Surface 522 is 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 a plastic material. The object side surface 531 is convex at the near optical axis 590, and the image side surface 532 is concave at the near optical axis 590, and the object side surface 531 and the image side are Surface 532 is aspherical.
該第四透鏡540具有負屈折力,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處為凹面,且該物側表面541及像側表面542皆為非球面。The fourth lens 540 has a negative refractive power and is made of a plastic material. The object side surface 541 is concave at the near optical axis 590, and the image side surface 542 is concave at the near optical axis 590, and the object side surface 541 and the image side are Surface 542 is aspherical.
該第五透鏡550具有正屈折力,且為塑膠材質,其物側表面551近光軸590處為凹面,其像側表面552近光軸590處為凸面,且該物側表面551及像側表面552皆為非球面,本實施例中,該第五透鏡550的物側表面551的周邊處也為凹面。The fifth lens 550 has a positive refractive power and is made of a plastic material. The object side surface 551 is concave at the near optical axis 590, and the image side surface 552 is convex at the near optical axis 590, and the object side surface 551 and the image side are The surface 552 is aspherical. In the embodiment, the periphery of the object side surface 551 of the fifth lens 550 is also a concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 570 is made of glass and disposed between the fifth lens 550 and the imaging surface 580 without affecting the focal length of the optical telephoto lens.
再配合參照下列表9、以及表10。Refer to Table 9 and Table 10 below.
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 represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
配合表9、以及表10可推算出下列數據:The following data can be derived from Table 9 and Table 10:
<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光學攝遠成像鏡頭的示意圖,圖6B由左至右依序為第六實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖6A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈600設置在該第二透鏡620與第三透鏡630之間。6A and 6B, wherein FIG. 6A is a schematic diagram of an optical telephoto lens according to a sixth embodiment of the present invention, and FIG. 6B is a ball of the optical telephoto lens of the sixth embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 6A, the optical telephoto lens includes an aperture 600 and an optical group. The optical group 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. 640, a fifth lens 650, an infrared filter element 670, and an imaging surface 680, wherein the lens having a refractive power in the optical telephoto lens is five. The aperture 600 is disposed between the second lens 620 and the third lens 630.
該第一透鏡610具有正屈折力,且為塑膠材質,其物側表面611近光軸690處為凸面,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 positive refractive power and is made of a plastic material. The object side surface 611 is convex at the near optical axis 690, and the image side surface 612 is convex at the near optical axis 690, and the object side surface 611 and the image side are Surface 612 is aspherical.
該第二透鏡620具有負屈折力,且為塑膠材質,其物側表面621近光軸690處為凹面,其像側表面622近光軸690處為凹面,且該物側表面621及像側表面622皆為非球面。The second lens 620 has a negative refractive power and is made of a plastic material. The object side surface 621 is concave at the near optical axis 690, and the image side surface 622 is concave at the near optical axis 690, and the object side surface 621 and the image side are Surface 622 is 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處為凹面,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 a plastic material. The object side surface 631 is concave at the near optical axis 690, and the image side surface 632 is concave at the near optical axis 690, and the object side surface 631 and the image side are Surface 632 is aspherical.
該第四透鏡640具有負屈折力,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處為凹面,且該物側表面641及像側表面642皆為非球面。The fourth lens 640 has a negative refractive power and is made of a plastic material. The object side surface 641 is concave at the near optical axis 690, and the image side surface 642 is concave at the near optical axis 690, and the object side surface 641 and the image side are Surface 642 is aspherical.
該第五透鏡650具有正屈折力,且為塑膠材質,其物側表面651近光軸690處為凹面,其像側表面652近光軸690處為凸面,且該物側表面651及像側表面652皆為非球面,本實施例中,該第五透鏡650的物側表面651的周邊處也為凹面。The fifth lens 650 has a positive refractive power and is made of a plastic material. The object side surface 651 is concave at the near optical axis 690, and the image side surface 652 is convex at the near optical axis 690, and the object side surface 651 and the image side are The surface 652 is aspherical. In the embodiment, the periphery of the object side surface 651 of the fifth lens 650 is also a concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 670 is made of glass and disposed between the fifth lens 650 and the imaging surface 680 without affecting the focal length of the optical telephoto lens.
再配合參照下列表11、以及表12。Referring again to Table 11 and Table 12 below.
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 aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
配合表11、以及表12可推算出下列數據:The following data can be derived from Table 11 and Table 12:
<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光學攝遠成像鏡頭的示意圖,圖7B由左至右依序為第七實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖7A可知,光學攝遠成像鏡頭係包含有一光圈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,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈700設置在該第二透鏡720與第三透鏡730之間。Please refer to FIG. 7A and FIG. 7B , wherein FIG. 7A is a schematic diagram of an optical telephoto lens according to a seventh embodiment of the present invention, and FIG. 7B is a ball of the optical telephoto lens of the seventh embodiment from left to right. Difference, astigmatism and distortion curves. As can be seen from FIG. 7A, the optical telephoto lens includes an aperture 700 and an optical group. The optical group includes a first lens 710, a second lens 720, a third lens 730, and a fourth lens from the object side to the image side. 740, a fifth lens 750, an infrared filter element 770, and an imaging surface 780, wherein the lens having a refractive power in the optical telephoto lens is five. The aperture 700 is disposed between the second lens 720 and the third lens 730.
該第一透鏡710具有正屈折力,且為塑膠材質,其物側表面711近光軸790處為凸面,其像側表面712近光軸790處為凸面,且該物側表面711及像側表面712皆為非球面。The first lens 710 has a positive refractive power and is made of a plastic material. The object side surface 711 is convex at the near optical axis 790, and the image side surface 712 is convex at the near optical axis 790, and the object side surface 711 and the image side are Surface 712 is aspherical.
該第二透鏡720具有負屈折力,且為塑膠材質,其物側表面721近光軸790處為凹面,其像側表面722近光軸790處為凹面,且該物側表面721及像側表面722皆為非球面。The second lens 720 has a negative refractive power and is made of a plastic material. The object side surface 721 is concave at the near optical axis 790, and the image side surface 722 is concave at the near optical axis 790, and the object side surface 721 and the image side are Surface 722 is 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處為凹面,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 a plastic material. The object side surface 731 is concave at the near optical axis 790, and the image side surface 732 is concave at the near optical axis 790, and the object side surface 731 and the image side are Surface 732 is aspherical.
該第四透鏡740具有負屈折力,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處為凹面,且該物側表面741及像側表面742皆為非球面。The fourth lens 740 has a negative refractive power and is made of a plastic material. The object side surface 741 is concave at the near optical axis 790, and the image side surface 742 is concave at the near optical axis 790, and the object side surface 741 and the image side are Surface 742 is aspherical.
該第五透鏡750具有正屈折力,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處為凸面,且該物側表面751及像側表面752皆為非球面,本實施例中,該第五透鏡750的物側表面751的周邊處為凹面,也就是該第五透鏡750物側表面751由近光軸790處至周邊處存在由凸面轉凹面的變化。The fifth lens 750 has a positive refractive power and is made of a plastic material. The object side surface 751 is convex at the near optical axis 790, and the image side surface 752 is convex at the near optical axis 790, and the object side surface 751 and the image side are The surface 752 is aspherical. In this embodiment, the periphery of the object side surface 751 of the fifth lens 750 is concave, that is, the fifth lens 750 object side surface 751 is present from the near optical axis 790 to the periphery. The change in the convex to concave surface.
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間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 770 is made of glass and disposed between the fifth lens 750 and the imaging surface 780 without affecting the focal length of the optical imaging lens.
再配合參照下列表13、以及表14。Refer to Table 13 and Table 14 below.
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 aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
配合表13、以及表14可推算出下列數據:The following data can be derived from Table 13 and Table 14:
<第八實施例><Eighth Embodiment>
請參照圖8A及圖8B,其中圖8A繪示依照本發明第八實施例之光學攝遠成像鏡頭的示意圖,圖8B由左至右依序為第八實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。由圖8A可知,光學攝遠成像鏡頭係包含有一光圈800和一光學組,該光學組由物側至像側依序包含第一透鏡810、第二透鏡820、第三透鏡830、第四透鏡840、第五透鏡850、紅外線濾除濾光元件870、以及成像面880,其中該光學攝遠成像鏡頭中具屈折力的透鏡為五片。該光圈800設置在該第二透鏡820與第三透鏡830之間。8A and FIG. 8B, FIG. 8A is a schematic diagram of an optical telephoto lens according to an eighth embodiment of the present invention, and FIG. 8B is a ball from the left to the right of the optical telephoto lens of the eighth embodiment. Difference, astigmatism and distortion curves. As shown in FIG. 8A, the optical telephoto lens includes an aperture 800 and an optical group. The optical group sequentially includes a first lens 810, a second lens 820, a third lens 830, and a fourth lens from the object side to the image side. 840, a fifth lens 850, an infrared filter element 870, and an imaging surface 880, wherein the lens of the optical telephoto lens has a refractive power of five. The aperture 800 is disposed between the second lens 820 and the third lens 830.
該第一透鏡810具有正屈折力,且為塑膠材質,其物側表面811近光軸890處為凸面,其像側表面812近光軸890處為凸面,且該物側表面811及像側表面812皆為非球面。The first lens 810 has a positive refractive power and is made of a plastic material. The object side surface 811 is convex at the near optical axis 890, and the image side surface 812 is convex at the near optical axis 890, and the object side surface 811 and the image side are Surface 812 is aspherical.
該第二透鏡820具有負屈折力,且為塑膠材質,其物側表面821近光軸890處為凹面,其像側表面822近光軸890處為凹面,且該物側表面821及像側表面822皆為非球面。The second lens 820 has a negative refractive power and is made of a plastic material. The object side surface 821 is concave at the near optical axis 890, and the image side surface 822 is concave at the near optical axis 890, and the object side surface 821 and the image side are Surface 822 is aspherical.
該第三透鏡830具有負屈折力,且為塑膠材質,其物側表面831近光軸890處為凸面,其像側表面832近光軸890處為凹面,且該物側表面831及像側表面832皆為非球面。The third lens 830 has a negative refractive power and is made of a plastic material. The object side surface 831 is convex at the near optical axis 890, and the image side surface 832 is concave at the near optical axis 890, and the object side surface 831 and the image side are Surface 832 is aspherical.
該第四透鏡840具有負屈折力,且為塑膠材質,其物側表面841近光軸890處為凹面,其像側表面842近光軸890處為凹面,且該物側表面841及像側表面842皆為非球面。The fourth lens 840 has a negative refractive power and is made of a plastic material. The object side surface 841 is concave at the near optical axis 890, and the image side surface 842 is concave at the near optical axis 890, and the object side surface 841 and the image side are Surface 842 is aspherical.
該第五透鏡850具有正屈折力,且為塑膠材質,其物側表面851近光軸890處為凸面,其像側表面852近光軸890處為凹面,且該物側表面851及像側表面852皆為非球面,本實施例中,該第五透鏡850的物側表面851的周邊處為凹面,也就是該第五透鏡850物側表面851由近光軸890處至周邊處存在由凸面轉凹面的變化。The fifth lens 850 has a positive refractive power and is made of a plastic material. The object side surface 851 is convex at the near optical axis 890, and the image side surface 852 is concave at the near optical axis 890, and the object side surface 851 and the image side are The surface 852 is aspherical. In this embodiment, the periphery of the object side surface 851 of the fifth lens 850 is concave, that is, the object side surface 851 of the fifth lens 850 is present from the near optical axis 890 to the periphery. The change in the convex to concave surface.
該紅外線濾除濾光元件870為玻璃材質,其設置於該第五透鏡850及成像面880間且不影響該光學攝遠成像鏡頭的焦距。The infrared filter element 870 is made of glass and disposed between the fifth lens 850 and the imaging surface 880 without affecting the focal length of the optical telephoto lens.
再配合參照下列表15、以及表16。Refer to Table 15 and Table 16 below for reference.
第八實施例中,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 eighth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.
配合表15、以及表16可推算出下列數據:The following data can be derived from Table 15 and Table 16:
本發明提供的光學攝遠成像鏡頭,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,則可以增加光學攝遠成像鏡頭屈折力配置的自由度。此外,光學攝遠成像鏡頭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光學攝遠成像鏡頭的總長度。The optical telephoto lens provided by the invention can be made of plastic or glass. When the lens material is plastic, the production cost can be effectively reduced. When the lens is made of glass, the refractive power of the optical telephoto lens can be increased. The degree of freedom. In addition, the object side surface and the image side surface of the lens in the optical telephoto lens may be aspherical, and the aspheric surface can be easily formed into a shape other than the spherical surface, and more control variables are obtained to reduce the aberration and thereby reduce the lens use. The number of the optical telephoto lens of the present invention can be effectively reduced.
本發明提供的光學攝遠成像鏡頭中,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 optical telephoto lens provided by the present invention, in the case of a lens having a refractive power, if the surface of the lens is convex and the position of the convex surface is not defined, it indicates that the surface of the lens is convex at the near optical axis; When the surface is concave and the concave position is not defined, it indicates that the lens surface is concave at the near optical axis.
本發明提供的光學攝遠成像鏡頭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 optical telephoto lens provided by the invention is more suitable for the optical system of moving focus, and has the characteristics of excellent aberration correction and good imaging quality, and can be applied to 3D (3D) image capturing and digital cameras in various aspects. In electronic imaging systems such as mobile devices, digital tablets or car photography.
綜上所述,上述各實施例及圖式僅為本發明的較佳實施例而已,當不能以之限定本發明實施之範圍,即大凡依本發明申請專利範圍所作的均等變化與修飾,皆應屬本發明專利涵蓋的範圍內。In the above, the above embodiments and drawings are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the present invention are all It should be within the scope of the patent of the present invention.
100、200、300、400、500、600、700、800‧‧‧光圈100, 200, 300, 400, 500, 600, 700, 800‧ ‧ aperture
110、210、310、410、510、610、710、810‧‧‧第一透鏡110, 210, 310, 410, 510, 610, 710, 810 ‧ ‧ first lens
111、211、311、411、511、611、711、811‧‧‧物側表面111, 211, 311, 411, 511, 611, 711, 811 ‧ ‧ ‧ side surface
112、212、312、412、512、612、712、812‧‧‧像側表面112, 212, 312, 412, 512, 612, 712, 812‧‧‧ image side surface
120、220、320、420、520、620、720、820‧‧‧第二透鏡120, 220, 320, 420, 520, 620, 720, 820‧‧‧ second lens
121、221、321、421、521、621、721、821‧‧‧物側表面121, 221, 321, 421, 521, 621, 721, 821‧‧ ‧ side surfaces
122、222、322、422、522、622、722、822‧‧‧像側表面122, 222, 322, 422, 522, 622, 722, 822 ‧ ‧ side surface
130、230、330、430、530、630、730、830‧‧‧第三透鏡130, 230, 330, 430, 530, 630, 730, 830 ‧ ‧ third lens
131、231、331、431、531、631、731、831‧‧‧物側表面131, 231, 331, 431, 531, 631, 731, 831 ‧ ‧ ‧ side surface
132、232、332、432、532、632、732、832‧‧‧像側表面132, 232, 332, 432, 532, 632, 732, 832‧‧‧ side surface
140、240、340、440、540、640、740、840‧‧‧第四透鏡140, 240, 340, 440, 540, 640, 740, 840 ‧ ‧ fourth lens
141、241、341、441、541、641、741、841‧‧‧物側表面141, 241, 341, 441, 541, 641, 741, 841‧‧‧ ‧ side surfaces
142、242、342、442、542、642、742、842‧‧‧像側表面142, 242, 342, 442, 542, 642, 742, 842 ‧ ‧ side surface
150、250、350、450、550、650、750、850‧‧‧第五透鏡150, 250, 350, 450, 550, 650, 750, 850 ‧ ‧ fifth lens
151、251、351、451、551、651、751、851‧‧‧物側表面151, 251, 351, 451, 551, 651, 751, 851 ‧ ‧ ‧ side surface
152、252、352、452、552、652、752、852‧‧‧像側表面152, 252, 352, 452, 552, 652, 752, 852 ‧ ‧ side surface
170、270、370、470、570、670、770、870‧‧‧紅外線濾除濾光元件170, 270, 370, 470, 570, 670, 770, 870 ‧ ‧ infrared filter components
180、280、380、480、580、680、780、880‧‧‧成像面180, 280, 380, 480, 580, 680, 780, 880 ‧ ‧ imaging surface
190、290、390、490、590、690、790、890‧‧‧光軸190, 290, 390, 490, 590, 690, 790, 890‧‧‧ optical axis
f‧‧‧光學攝遠成像鏡頭的焦距f‧‧‧The focal length of the optical telephoto lens
Fno‧‧‧光學攝遠成像鏡頭的光圈值Fno‧‧‧Aperture value of optical telephoto lens
HFOV‧‧‧光學攝遠成像鏡頭中最大視場角的一半Half of the maximum field of view in the HFOV‧‧ optical imaging lens
FOV‧‧‧光學攝遠成像鏡頭中最大視場角Maximum viewing angle in FOV‧‧‧ optical telephoto lens
f1‧‧‧第一透鏡的焦距F1‧‧‧The focal length of the first lens
f2‧‧‧第二透鏡的焦距F2‧‧‧The focal length of the second lens
f3‧‧‧第三透鏡的焦距f3‧‧‧The focal length of the third lens
f4‧‧‧第四透鏡的焦距F4‧‧‧The focal length of the fourth lens
f5‧‧‧第五透鏡的焦距f5‧‧‧Focus of the fifth lens
R1‧‧‧第一透鏡的物側表面曲率半徑R1‧‧‧ radius of curvature of the object side surface of the first lens
R2‧‧‧第一透鏡的像側表面曲率半徑R2‧‧‧ Image side surface radius of curvature of the first lens
R3‧‧‧第二透鏡的物側表面曲率半徑R3‧‧‧ radius of curvature of the object side surface of the second lens
R4‧‧‧第二透鏡的像側表面曲率半徑R4‧‧‧ Image side surface radius of curvature of the second lens
R9‧‧‧第五透鏡的物側表面曲率半徑Radius radius of the object side surface of R9‧‧‧ fifth lens
V2‧‧‧第二透鏡的色散係數V2‧‧‧Dispersion coefficient of the second lens
V3‧‧‧第三透鏡的色散係數V3‧‧‧Dispersion coefficient of the third lens
V5‧‧‧第五透鏡的色散係數Dispersion coefficient of V5‧‧‧ fifth lens
TD‧‧‧第一透鏡的物側表面到第五透鏡的像側表面於光軸上的距離TD‧‧‧distance from the object side surface of the first lens to the image side surface of the fifth lens on the optical axis
SD‧‧‧光圈到第五透鏡的像側表面於光軸上的距離Distance from SD‧‧‧ aperture to the image side surface of the fifth lens on the optical axis
TTL‧‧‧第一透鏡的物側表面到成像面於光軸上的距離TTL‧‧‧The distance from the object side surface of the first lens to the imaging surface on the optical axis
圖1A係本發明第一實施例之光學攝遠成像鏡頭的示意圖。 圖1B由左至右依序為第一實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖2A係本發明第二實施例之光學攝遠成像鏡頭的示意圖。 圖2B由左至右依序為第二實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖3A係本發明第三實施例之光學攝遠成像鏡頭的示意圖。 圖3B由左至右依序為第三實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖4A係本發明第四實施例之光學攝遠成像鏡頭的示意圖。 圖4B由左至右依序為第四實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖5A係本發明第五實施例之光學攝遠成像鏡頭的示意圖。 圖5B由左至右依序為第五實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖6A係本發明第六實施例之光學攝遠成像鏡頭的示意圖。 圖6B由左至右依序為第六實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖7A係本發明第七實施例之光學攝遠成像鏡頭的示意圖。 圖7B由左至右依序為第七實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。 圖8A係本發明第八實施例之光學攝遠成像鏡頭的示意圖。 圖8B由左至右依序為第八實施例的光學攝遠成像鏡頭的球差、像散及歪曲曲線圖。1A is a schematic view of an optical telephoto lens of a first embodiment of the present invention. 1B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the first embodiment, from left to right. 2A is a schematic view of an optical telephoto lens of a second embodiment of the present invention. 2B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the second embodiment, from left to right. Fig. 3A is a schematic view showing an optical telephoto lens of a third embodiment of the present invention. FIG. 3B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the third embodiment, from left to right. 4A is a schematic view of an optical telephoto lens of a fourth embodiment of the present invention. 4B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the fourth embodiment, from left to right. Fig. 5A is a schematic view showing an optical telephoto lens of a fifth embodiment of the present invention. FIG. 5B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the fifth embodiment, from left to right. Fig. 6A is a schematic view showing an optical telephoto lens of a sixth embodiment of the present invention. 6B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the sixth embodiment, from left to right. Fig. 7A is a schematic view showing an optical telephoto lens of a seventh embodiment of the present invention. 7B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the seventh embodiment, from left to right. Fig. 8A is a schematic view showing an optical telephoto lens of an eighth embodiment of the present invention. FIG. 8B is a spherical aberration, astigmatism, and distortion curve of the optical telephoto lens of the eighth embodiment from left to right.
Claims (15)
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CN111443468A (en) * | 2020-05-20 | 2020-07-24 | 威海世高光电子有限公司 | Telephoto lens and electronic device |
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US11221467B2 (en) | 2018-08-31 | 2022-01-11 | Senyun Precision Optical Corporation | Optical imaging lens |
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