TWI491951B - Miniature imaging lens - Google Patents
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Description
本發明係與光學裝置有關，更詳而言之是指一種微小型成像鏡頭。The present invention relates to an optical device, and more particularly to a micro-miniature imaging lens.
近年來，隨著科技的進步，如相機、攝影機、顯微鏡或掃描器等影像擷取裝置，為方便人們攜帶與使用，而逐漸趨向小型化與輕量化，此將使得影像擷取裝置所用之成像鏡頭的體積也因此被大幅縮小。另外，除了小型化與輕量化外，也要能夠具有更高的光學效能，才能使達成高解析度和高對比之展現。因此，小型化和高光學效能，是成像鏡頭不可缺兩項要件。In recent years, with the advancement of technology, image capturing devices such as cameras, cameras, microscopes, or scanners have become smaller and lighter for the convenience of carrying and using, which will enable imaging of image capturing devices. The volume of the lens has also been greatly reduced. In addition, in addition to miniaturization and weight reduction, it is also necessary to have higher optical performance in order to achieve high resolution and high contrast. Therefore, miniaturization and high optical performance are two essential elements of an imaging lens.
然而，目前影像擷取裝置所採用的成像鏡頭，為達到高光學效能之目的，不外乎使用了多組之鏡群，甚至有鏡片總合多於十片以上者。另外，亦有為達到使成像鏡頭小型化之目的，而僅使用數片鏡片，卻使得其光學效能無法有效提升。However, the imaging lens used in the current image capturing device is used for the purpose of achieving high optical performance, and is used in a plurality of groups of mirrors, and even more than ten lenses are combined. In addition, in order to achieve the purpose of miniaturizing the imaging lens, only a few lenses are used, but the optical performance cannot be effectively improved.
綜合以上所述，已知之成像鏡頭仍未偵完善，且尚有待改進之處。In summary, the known imaging lens is still unrecognized and there is still room for improvement.
有鑑於此，本發明之主要目的在於提供一種微小型成像鏡頭，不僅體積小且高光學效能者。In view of this, the main object of the present invention is to provide a micro-miniature imaging lens which is not only small in size but also high in optical efficiency.
緣以達成上述目的，本發明所提供之微小型成像鏡頭包含有沿一光軸並由一物側至一像側依序排列之一第一鏡片、一第二鏡片、一第三鏡片、一光圈、一第四鏡片以及一第五鏡片。其中，該第一鏡片為具有負屈光力之新月形鏡片，其凸面朝向該物側，且至少一面為非球面表面；該第二鏡片為具有正屈光力之雙凸鏡片；該第三鏡片為具有負屈光力之雙凹鏡片；該第四鏡片為具有正屈光力之雙凸鏡片，且至少一面為非球面表面；該第五鏡片為具有負屈光力之鏡片。In order to achieve the above object, the micro-miniature imaging lens provided by the present invention comprises a first lens, a second lens, a third lens and a first lens arranged along an optical axis and from an object side to an image side. An aperture, a fourth lens, and a fifth lens. Wherein, the first lens is a crescent lens having a negative refractive power, the convex surface faces the object side, and at least one side is an aspherical surface; the second lens is a lenticular lens having positive refractive power; the third lens has a birefringent lens having a negative refractive power; the fourth lens is a lenticular lens having a positive refractive power, and at least one side is an aspherical surface; and the fifth lens is a lens having a negative refractive power.
藉此，利用上述鏡片與光圈之配置而達到小型化與高光學效能之目的。Thereby, the use of the above-mentioned lens and aperture arrangement achieves the purpose of miniaturization and high optical performance.
為能更清楚地說明本發明，茲舉較佳實施例並配合圖示詳細說明如後。In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings.
請參閱圖1，為本發明第一較佳實施例之微小型成像鏡頭1之鏡片配置圖。圖2為圖1所示實施例之光路圖。配合圖1及圖2，以下將詳細說明本發明第一實施例之微小型成像鏡頭1。Please refer to FIG. 1 , which is a lens configuration diagram of a micro-miniature imaging lens 1 according to a first preferred embodiment of the present invention. Figure 2 is a light path diagram of the embodiment of Figure 1. 1 and 2, the micro-miniature imaging lens 1 of the first embodiment of the present invention will be described in detail below.
該微小型成像鏡頭1包含有沿光軸Z並由物側至像側依序排列之一第一鏡片L1、一第二鏡片L2、一第三鏡片L3、一光圈ST、一第四鏡片L4以及一第五鏡片L5。另外，依使用上的需求，在該第五鏡片L5與成像平面IP(Image Plane)之間 可選擇性地設置一濾光片CF，係一平板玻璃。其中：該第一鏡片L1係由玻璃材質所製成，且為一個具有負屈光力之新月形鏡片，其凸面朝向物側。另外，該第一鏡片L1之凸面S1與凹面S2皆為非球面表面。The micro-miniature imaging lens 1 includes a first lens L1, a second lens L2, a third lens L3, an aperture ST, and a fourth lens L4 arranged along the optical axis Z and sequentially from the object side to the image side. And a fifth lens L5. In addition, depending on the requirements of use, between the fifth lens L5 and the imaging plane IP (Image Plane) A filter CF can be selectively disposed, which is a flat glass. Wherein: the first lens L1 is made of a glass material and is a crescent lens having a negative refractive power, the convex surface of which faces the object side. In addition, the convex surface S1 and the concave surface S2 of the first lens L1 are both aspherical surfaces.
該第二鏡片L2係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。該第三鏡片L3係由玻璃材質所製成，且為一個具有負屈光力之雙凹鏡片。另外，該第二鏡片L2與該第三鏡片L3膠黏形成一個具有正屈光力之膠合鏡片L23。The second lens L2 is made of a glass material and is a lenticular lens having a positive refractive power. The third lens L3 is made of a glass material and is a double concave lens having a negative refractive power. In addition, the second lens L2 and the third lens L3 are glued to form a cemented lens L23 having positive refractive power.
該第四鏡片L4係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。另外，該第四鏡片L4之兩個凸面S8、S9皆為非球面表面。The fourth lens L4 is made of a glass material and is a lenticular lens having a positive refractive power. In addition, the two convex surfaces S8 and S9 of the fourth lens L4 are all aspherical surfaces.
該第五鏡片L5係由玻璃材質所製成，且為一個具有負屈光力之新月形鏡片，其凸面S11朝向像側。The fifth lens L5 is made of a glass material and is a crescent lens having a negative refractive power, and the convex surface S11 faces the image side.
而上述微小型成像鏡頭1之鏡片配置中，該第一鏡片L1之負屈光力特性、該第四鏡片L4之正屈光力特性、以及該二鏡片L1、L4之非球面設計，可使該微小型成像鏡頭1具有較佳之成像效果，並可有效縮短鏡頭總長，更可使該微小型成像鏡頭1得到較大的可視角(Field of View Angle，FOV)。In the lens configuration of the micro-miniature imaging lens 1, the negative refractive power characteristic of the first lens L1, the positive refractive power characteristic of the fourth lens L4, and the aspherical design of the two lenses L1 and L4 enable the micro-small imaging. The lens 1 has a better imaging effect, and can effectively shorten the total length of the lens, and the micro-miniature imaging lens 1 can obtain a larger Field of View Angle (FOV).
本發明第一實施例之微小型成像鏡頭1的焦距F(Focus Length)、數值孔徑Fno(F-number)、各個鏡片表面的光軸Z通過處的曲率半徑R(radius of curvature)、各鏡片於光軸Z上之厚度T(thickness)、各鏡片之折射率Nd(refractive index)
及各鏡片之阿貝係數Vd(Abbe number)，如表一所示：
本實施例的各個鏡片中，該等非球面表面S1、S2、S8及S9之表面凹陷度z由下列公式所得到：
其中：z：非球面表面之凹陷度；c：曲率半徑之倒數；h：表面之孔徑半徑； k：圓錐係數；A~G：表面之孔徑半徑h的各階係數。Where: z: the degree of depression of the aspheric surface; c: the reciprocal of the radius of curvature; h: the aperture radius of the surface; k: conic coefficient; A~G: various order coefficients of the aperture radius h of the surface.
在本實施例中，各個非球面表面的圓錐係數k(conic constant)及表面孔徑半徑h的各階係數A~G如表二所示：
藉由上述的鏡片及光圈ST配置，使得本實施例之微小型成像鏡頭1不但可有效縮小體積以符合小型化之需求，在成像品質上也可達到要求，這可從圖3A至圖3D看出。With the lens and aperture ST configuration described above, the micro-miniature imaging lens 1 of the present embodiment can not only effectively reduce the volume to meet the requirements of miniaturization, but also meet the requirements in image quality, which can be seen from FIG. 3A to FIG. 3D. Out.
圖3A所示的，是本實施例之微小型成像鏡頭1之場曲圖及畸變圖；圖3B所示的，是本實施例之微小型成像鏡頭1之橫向光扇圖；圖3C所示的，是本實施例之微小型成像鏡頭1之離焦調制傳遞函數圖(Through Focus MTF)；圖3D所示的，是本實施例之微小型成像鏡頭1之空間頻率調制傳遞函數圖(Spatial Frequency MTF)。FIG. 3A is a field curvature diagram and a distortion diagram of the micro-miniature imaging lens 1 of the present embodiment; FIG. 3B is a transverse light fan diagram of the micro-miniature imaging lens 1 of the present embodiment; FIG. 3C is shown in FIG. The deviation focus transfer function diagram (Through Focus MTF) of the miniature imaging lens 1 of the present embodiment; and the spatial frequency modulation transfer function diagram of the miniature imaging lens 1 of the present embodiment (Spatial) is shown in FIG. 3D. Frequency MTF).
從圖3A可看出，本實施例之最大場曲不超過0.1mm和-0.1mm，畸變量不超過0.6%。從圖3B與圖3C可看出，本實施例無論在哪個視場位置都具有良好的解析度。從圖3D可知，本實施例在48lp/mm的時侯，其調制光學傳遞函數值仍維持 在60%以上，顯見本實施例之微小型成像鏡頭1的解析度是符合標準的。As can be seen from FIG. 3A, the maximum field curvature of this embodiment does not exceed 0.1 mm and -0.1 mm, and the distortion variable does not exceed 0.6%. As can be seen from FIG. 3B and FIG. 3C, this embodiment has a good resolution regardless of the field of view position. As can be seen from FIG. 3D, the modulation optical transfer function value is maintained at 48 lp/mm in this embodiment. Above 60%, it is apparent that the resolution of the micro-miniature imaging lens 1 of the present embodiment is in compliance with the standard.
以上所述的，是本發明第一實施例的微小型成像鏡頭1；依據本發明的技術，以下配合圖4及圖5說明本發明的第二實施例。The above is a micro-miniature imaging lens 1 according to the first embodiment of the present invention; in accordance with the technology of the present invention, a second embodiment of the present invention will be described below with reference to FIGS. 4 and 5.
與第一實施例相同地，本發明第二實施例之微小型成像鏡頭2包含有自物側至像側且沿光軸Z設置之一第一鏡片L1、一第二鏡片L2、一第三鏡片L3、一光圈ST、一第四鏡片L4以及一第五鏡片L5，且在第五鏡片L5與成像平面IP之間同樣設置有係一平板玻璃之濾光片CF。其中： 該第一鏡片L1係由玻璃材質所製成，且為一個具有負屈光力之新月形鏡片，其凸面S1朝向物側。另外，該第一鏡片L1之凸面S1與凹面S2皆為非球面表面。Similarly to the first embodiment, the micro-miniature imaging lens 2 of the second embodiment of the present invention includes a first lens L1, a second lens L2, and a third surface disposed along the optical axis Z from the object side to the image side. A lens L3, a diaphragm ST, a fourth lens L4, and a fifth lens L5 are disposed, and a filter glass CF of a flat glass is also disposed between the fifth lens L5 and the imaging plane IP. among them: The first lens L1 is made of a glass material and is a crescent lens having a negative refractive power, and the convex surface S1 faces the object side. In addition, the convex surface S1 and the concave surface S2 of the first lens L1 are both aspherical surfaces.
該第二鏡片L2係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。該第三鏡片L3係由玻璃材質所製成，且為一個具有負屈光力之雙凹鏡片。另外，該第二鏡片L2與該第三鏡片L3膠黏形成一個具有正屈光力之膠合鏡片L23。The second lens L2 is made of a glass material and is a lenticular lens having a positive refractive power. The third lens L3 is made of a glass material and is a double concave lens having a negative refractive power. In addition, the second lens L2 and the third lens L3 are glued to form a cemented lens L23 having positive refractive power.
該第四鏡片L4係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。另外，該第四鏡片L4之兩個凸面S8、S9皆為非球面表面。The fourth lens L4 is made of a glass material and is a lenticular lens having a positive refractive power. In addition, the two convex surfaces S8 and S9 of the fourth lens L4 are all aspherical surfaces.
該第五鏡片L5係由玻璃材質所製成，且為一個具有負屈光力之新月形鏡片，且其凸面S11朝向像側。The fifth lens L5 is made of a glass material and is a crescent lens having a negative refractive power, and its convex surface S11 faces the image side.
而上述之鏡片配置中，其中該第一鏡片L1之負屈光力特性、該第四鏡片L4之正屈光力特性、以及該二鏡片L1、L4之非球面設計，同樣可使該微小型成像鏡頭2具有較佳之成像效果，有效縮短鏡頭總長、以及使該微小型成像鏡頭2得到較大的可視角(Field of View Angle，FOV)。In the above lens configuration, wherein the negative refractive power characteristic of the first lens L1, the positive refractive power characteristic of the fourth lens L4, and the aspherical design of the two lenses L1 and L4, the micro-miniature imaging lens 2 can also be provided. The better imaging effect effectively shortens the total length of the lens and enables the micro-miniature imaging lens 2 to obtain a larger Field of View Angle (FOV).
本發明第二實施例之微小型成像鏡頭2的焦距F(Focus Length)、數值孔徑Fno(F-number)、各個鏡片表面的光軸Z通過處的曲率半徑R(radius of curvature)、各鏡片於光軸Z上之厚度T(thickness)、各鏡片之折射率Nd(refractive index)及各鏡片之阿貝係數Vd(Abbe number)，如表三所示：
本實施例的各個鏡片中，該等非球面表面S1、S2、S8及S9之表面凹陷度z由下列公式所得到：
其中：z：非球面表面之凹陷度；c：曲率半徑之倒數；h：表面之孔徑半徑；k：圓錐係數；A~G：表面之孔徑半徑h的各階係數。Where: z: the degree of depression of the aspherical surface; c: the reciprocal of the radius of curvature; h: the aperture radius of the surface; k: the conic coefficient; A~G: the order factor of the aperture radius h of the surface.
在本實施例中，各個非球面表面的圓錐係數k(conic constant)及表面孔徑半徑h的各階係數A~G如表四所示：
藉由上述的鏡片及光圈ST配置，使得本實施例之微小型成像鏡頭2不但可有效縮小體積以達到小型化之需求，在成像品質上也可達到要求，這可從圖6A至圖6D看出。With the lens and aperture ST configuration described above, the micro-miniature imaging lens 2 of the present embodiment can not only effectively reduce the volume to achieve miniaturization, but also meet the requirements in image quality, which can be seen from FIG. 6A to FIG. 6D. Out.
圖6A所示的，是本實施例之微小型成像鏡頭2之場曲圖及畸變圖；圖6B所示的，是本實施例之微小型成像鏡頭2之 橫向光扇圖；圖6C所示的，是本實施例之微小型成像鏡頭2之離焦調制傳遞函數圖(Through Focus MTF)；圖6D所示的，是本實施例之微小型成像鏡頭2之空間頻率調制傳遞函數圖(Spatial Frequency MTF)。FIG. 6A is a field curvature diagram and a distortion diagram of the micro-miniature imaging lens 2 of the present embodiment; and FIG. 6B is a micro-miniature imaging lens 2 of the embodiment. FIG. 6C is a defocus modulation transfer function diagram (Through Focus MTF) of the micro-miniature imaging lens 2 of the present embodiment; and FIG. 6D is a micro-miniature imaging lens 2 of the embodiment. The spatial frequency modulation transfer function map (Spatial Frequency MTF).
從圖6A可看出，本實施例之最大場曲不超過0.1mm和-0.1mm，畸變量不超過0.6%。從圖6B與圖6C可看出，本實施例無論在哪個視場位置都具有良好的解析度。從圖6D可知，本實施例在48lp/mm的時侯，其調制光學傳遞函數值仍維持在50%以上，顯見本實施例之微小型成像鏡頭2的解析度是符合標準的。As can be seen from Fig. 6A, the maximum field curvature of this embodiment does not exceed 0.1 mm and -0.1 mm, and the distortion variable does not exceed 0.6%. As can be seen from FIG. 6B and FIG. 6C, this embodiment has a good resolution regardless of the field of view position. As can be seen from FIG. 6D, the modulation optical transfer function value of the present embodiment is maintained at 50% or more at 48 lp/mm. It is apparent that the resolution of the micro-miniature imaging lens 2 of the present embodiment is in compliance with the standard.
請參閱圖7及圖8，為本發明第三較佳實施例之微小型成像鏡頭3之鏡片配置及光路圖。該微小型成像鏡頭3同樣包含有自物側至像側且沿光軸Z設置之一第一鏡片L1、一第二鏡片L2、一第三鏡片L3、一光圈ST、一第四鏡片L4以及一第五鏡片L5，且在第五鏡片L5與成像平面IP之間同樣設置有係一平板玻璃之濾光片CF。其中：該第一鏡片L1係由玻璃材質所製成，且為一個具有負屈光力之新月形鏡片，其凸面朝向物側。另外，該第一鏡片L1之凸面S1與凹面S2皆為非球面表面。Please refer to FIG. 7 and FIG. 8 , which illustrate a lens configuration and an optical path diagram of a micro-miniature imaging lens 3 according to a third preferred embodiment of the present invention. The micro-miniature imaging lens 3 also includes a first lens L1, a second lens L2, a third lens L3, an aperture ST, a fourth lens L4, and the optical lens Z disposed from the object side to the image side. A fifth lens L5, and a filter glass CF of a flat glass is also disposed between the fifth lens L5 and the imaging plane IP. Wherein: the first lens L1 is made of a glass material and is a crescent lens having a negative refractive power, the convex surface of which faces the object side. In addition, the convex surface S1 and the concave surface S2 of the first lens L1 are both aspherical surfaces.
該第二鏡片L2係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。該第三鏡片L3係由玻璃材質所製成，且為 一個具有負屈光力之雙凹鏡片。另外，該第二鏡片L2與該第三鏡片L3膠黏形成一個具有負屈光力之膠合鏡片L23。The second lens L2 is made of a glass material and is a lenticular lens having a positive refractive power. The third lens L3 is made of glass material and is A double concave lens with negative refractive power. In addition, the second lens L2 and the third lens L3 are glued to form a cemented lens L23 having a negative refractive power.
該第四鏡片L4係由玻璃材質所製成，且為一個具有正屈光力之雙凸鏡片。另外，該第四鏡片L4之兩個凸面S8、S9皆為非球面表面。The fourth lens L4 is made of a glass material and is a lenticular lens having a positive refractive power. In addition, the two convex surfaces S8 and S9 of the fourth lens L4 are all aspherical surfaces.
該第五鏡片L5係由玻璃材質所製成，且為一個具有負屈光力之雙凹鏡片。The fifth lens L5 is made of a glass material and is a double concave lens having a negative refractive power.
而上述之鏡片配置中，其中該第一鏡片L1之負屈光力特性、該第四鏡片L4之正屈光力特性、以及該二鏡片L1、L4之非球面設計，同樣可使該微小型成像鏡頭3具有較佳之成像效果，有效縮短鏡頭總長、以及使該微小型成像鏡頭3得到較大的可視角(Field of View Angle，FOV)。In the above lens configuration, the negative refractive power characteristic of the first lens L1, the positive refractive power characteristic of the fourth lens L4, and the aspherical design of the two lenses L1 and L4 can also make the micro-miniature imaging lens 3 have The better imaging effect effectively shortens the total length of the lens and enables the micro-miniature imaging lens 3 to obtain a larger Field of View Angle (FOV).
本發明第三實施例之微小型成像鏡頭3的焦距F(Focus Length)、數值孔徑Fno(F-number)、各個鏡片表面的光軸Z通過處的曲率半徑R(radius of curvature)、各鏡片於光軸Z上之厚度T(thickness)、各鏡片之折射率Nd(refractive index)及各鏡片之阿貝係數Vd(Abbe number)，如表五所示：
本實施例的各個鏡片中，該等非球面表面S1、S2、S8及S9之表面凹陷度z由下列公式所得到：
其中：z：非球面表面之凹陷度；c：曲率半徑之倒數；h：表面之孔徑半徑；k：圓錐係數；A~G：表面之孔徑半徑h的各階係數。Where: z: the degree of depression of the aspherical surface; c: the reciprocal of the radius of curvature; h: the aperture radius of the surface; k: the conic coefficient; A~G: the order factor of the aperture radius h of the surface.
在本實施例中，各個非球面表面的圓錐係數k(conic constant)及表面孔徑半徑h的各階係數A~G如表六所示：
藉由上述的鏡片及光圈ST配置，使得本實施例之微小型成像鏡頭3不但可有效縮小體積以達到小型化之需求，在成像品質上也可達到要求，這可從圖9A至圖9D看出。With the lens and aperture ST configuration described above, the micro-miniature imaging lens 3 of the present embodiment can not only effectively reduce the volume to achieve miniaturization, but also meet the requirements in image quality, which can be seen from FIG. 9A to FIG. 9D. Out.
圖9A所示的，是本實施例之微小型成像鏡頭3之場曲圖及畸變圖；圖9B所示的，是本實施例之微小型成像鏡頭3之橫向光扇圖；圖9C所示的，是本實施例之微小型成像鏡頭3之離焦調制傳遞函數圖(Through Focus MTF)；圖9D所示的，是本實施例之微小型成像鏡頭3之空間頻率調制傳遞函數圖(Spatial Frequency MTF)。FIG. 9A is a field curvature diagram and a distortion diagram of the micro-miniature imaging lens 3 of the present embodiment; FIG. 9B is a lateral light fan diagram of the micro-miniature imaging lens 3 of the present embodiment; FIG. 9C is shown in FIG. The deviation focus transfer function diagram (Through Focus MTF) of the micro-miniature imaging lens 3 of the present embodiment; and the spatial frequency modulation transfer function diagram of the micro-miniature imaging lens 3 of the present embodiment (Spatial) is shown in FIG. 9D. Frequency MTF).
從圖9A可看出，本實施例之最大場曲不超過0.1mm和-0.1mm，畸變量不超過0.6%。從圖9B與圖9C可看出，本實施例無論在哪個視場位置都具有良好的解析度。從圖9D可知，本實施例在48lp/mm的時侯，其調制光學傳遞函數值仍維持在50%以上，顯見本實施例之微小型成像鏡頭的解析度是符合標準的。As can be seen from Fig. 9A, the maximum field curvature of this embodiment does not exceed 0.1 mm and -0.1 mm, and the distortion variable does not exceed 0.6%. As can be seen from FIG. 9B and FIG. 9C, this embodiment has a good resolution regardless of the field of view position. As can be seen from FIG. 9D, the modulation optical transfer function value of the present embodiment is maintained at 50% or more at 48 lp/mm. It is apparent that the resolution of the micro-miniature imaging lens of the present embodiment is in compliance with the standard.
綜合以上所可得知，本發明之微小型成像鏡頭不僅可以有效地縮小體積且同時可具有高光學效能。In summary, it can be seen that the micro-miniature imaging lens of the present invention can not only effectively reduce the volume but also have high optical performance.
以上所述僅為本發明較佳可行實施例而已，舉凡應用本發明說明書及申請專利範圍所為之等效結構及製作方法變化，理 應包含在本發明之專利範圍內。The above description is only a preferred embodiment of the present invention, and the equivalent structure and manufacturing method of the present invention and the scope of the patent application are changed. It should be included in the scope of the patent of the present invention.
1‧‧‧微小型成像鏡頭1‧‧‧Micro-sized imaging lens
L1‧‧‧第一鏡片L1‧‧‧ first lens
L2‧‧‧第二鏡片L2‧‧‧ second lens
L3‧‧‧第三鏡片L3‧‧‧ third lens
L23‧‧‧膠合鏡片L23‧‧‧Glued lenses
L4‧‧‧第四鏡片L4‧‧‧ fourth lens
L5‧‧‧第五鏡片L5‧‧‧ fifth lens
ST‧‧‧光圈ST‧‧‧ aperture
Z‧‧‧光軸Z‧‧‧ optical axis
CF‧‧‧濾光片CF‧‧‧Filter
IP‧‧‧成像平面IP‧‧‧ imaging plane
S1~S13‧‧‧表面S1~S13‧‧‧ surface
2‧‧‧微小型成像鏡頭2‧‧‧Micro-sized imaging lens
L1‧‧‧第一鏡片L1‧‧‧ first lens
L2‧‧‧第二鏡片L2‧‧‧ second lens
L3‧‧‧第三鏡片L3‧‧‧ third lens
L23‧‧‧膠合鏡片L23‧‧‧Glued lenses
L4‧‧‧第四鏡片L4‧‧‧ fourth lens
L5‧‧‧第五鏡片L5‧‧‧ fifth lens
ST‧‧‧光圈ST‧‧‧ aperture
Z‧‧‧光軸Z‧‧‧ optical axis
CF‧‧‧濾光片CF‧‧‧Filter
IP‧‧‧成像平面IP‧‧‧ imaging plane
S1~S13‧‧‧表面S1~S13‧‧‧ surface
3‧‧‧微小型成像鏡頭3‧‧‧Micro-sized imaging lens
L1‧‧‧第一鏡片L1‧‧‧ first lens
L2‧‧‧第二鏡片L2‧‧‧ second lens
L3‧‧‧第三鏡片L3‧‧‧ third lens
L23‧‧‧膠合鏡片L23‧‧‧Glued lenses
L4‧‧‧第四鏡片L4‧‧‧ fourth lens
L5‧‧‧第五鏡片L5‧‧‧ fifth lens
ST‧‧‧光圈ST‧‧‧ aperture
Z‧‧‧光軸Z‧‧‧ optical axis
CF‧‧‧濾光片CF‧‧‧Filter
IP‧‧‧成像平面IP‧‧‧ imaging plane
S1~S13‧‧‧表面S1~S13‧‧‧ surface
圖1為本發明第一較佳實施例之鏡片配置圖。1 is a lens configuration diagram of a first preferred embodiment of the present invention.
圖2為本發明第一較佳實施例之光路圖。2 is a light path diagram of a first preferred embodiment of the present invention.
圖3A為本發明第一較佳實施例之場曲圖及畸變圖。3A is a field curvature diagram and a distortion diagram of a first preferred embodiment of the present invention.
圖3B為本發明第一較佳實施例之橫向光扇圖。3B is a transverse light fan diagram of the first preferred embodiment of the present invention.
圖3C為本發明第一較佳實施例之離焦調制傳遞函數圖。3C is a diagram showing a defocus modulation transfer function of the first preferred embodiment of the present invention.
圖3D為本發明第一較佳實施例之空間頻率調制傳遞函數圖。3D is a diagram showing a spatial frequency modulation transfer function of the first preferred embodiment of the present invention.
圖4為本發明第二較佳實施例之鏡片配置圖。4 is a configuration diagram of a lens according to a second preferred embodiment of the present invention.
圖5為本發明第二較佳實施例之光路圖。Figure 5 is a light path diagram of a second preferred embodiment of the present invention.
圖6A為本發明第二較佳實施例之場曲圖及畸變圖。6A is a field curvature diagram and a distortion diagram of a second preferred embodiment of the present invention.
圖6B為本發明第二較佳實施例之橫向光扇圖。Figure 6B is a transverse light fan diagram of a second preferred embodiment of the present invention.
圖6C為本發明第二較佳實施例之離焦調制傳遞函數圖。Figure 6C is a diagram showing the defocus modulation transfer function of the second preferred embodiment of the present invention.
圖6D為本發明第二較佳實施例之空間頻率調制傳遞函數圖。6D is a diagram showing a spatial frequency modulation transfer function of a second preferred embodiment of the present invention.
圖7為本發明第三較佳實施例之鏡片配置圖。Figure 7 is a perspective view of a lens arrangement in accordance with a third preferred embodiment of the present invention.
圖8為本發明第三較佳實施例之光路圖。Figure 8 is a light path diagram of a third preferred embodiment of the present invention.
圖9A為本發明第三較佳實施例之場曲圖及畸變圖。9A is a field curvature diagram and a distortion diagram of a third preferred embodiment of the present invention.
圖9B為本發明第三較佳實施例之橫向光扇圖。Figure 9B is a transverse light fan diagram of a third preferred embodiment of the present invention.
圖9C為本發明第三較佳實施例之離焦調制傳遞函數圖。Figure 9C is a diagram showing the defocus modulation transfer function of the third preferred embodiment of the present invention.
圖9D為本發明第三較佳實施例之空間頻率調制傳遞函數圖。9D is a diagram showing a spatial frequency modulation transfer function of a third preferred embodiment of the present invention.
1‧‧‧微小型成像鏡頭1‧‧‧Micro-sized imaging lens
L1‧‧‧第一鏡片L1‧‧‧ first lens
L2‧‧‧第二鏡片L2‧‧‧ second lens
L3‧‧‧第三鏡片L3‧‧‧ third lens
L23‧‧‧膠合鏡片L23‧‧‧Glued lenses
L4‧‧‧第四鏡片L4‧‧‧ fourth lens
L5‧‧‧第五鏡片L5‧‧‧ fifth lens
ST‧‧‧光圈ST‧‧‧ aperture
Z‧‧‧光軸Z‧‧‧ optical axis
CF‧‧‧濾光片CF‧‧‧Filter
IP‧‧‧成像平面IP‧‧‧ imaging plane
S1~S13‧‧‧表面S1~S13‧‧‧ surface
Claims (9)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100103716A TWI491951B (en) | 2011-01-31 | 2011-01-31 | Miniature imaging lens |
| US13/355,524 US8717689B2 (en) | 2011-01-31 | 2012-01-21 | Miniature image pickup lens |
| JP2012017984A JP2012159841A (en) | 2011-01-31 | 2012-01-31 | Imaging microlens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100103716A TWI491951B (en) | 2011-01-31 | 2011-01-31 | Miniature imaging lens |
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| Publication Number | Publication Date |
|---|---|
| TW201403165A TW201403165A (en) | 2014-01-16 |
| TWI491951B true TWI491951B (en) | 2015-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW100103716A TWI491951B (en) | 2011-01-31 | 2011-01-31 | Miniature imaging lens |
Country Status (1)
| Country | Link |
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| TW (1) | TWI491951B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04184311A (en) * | 1990-11-19 | 1992-07-01 | Ricoh Co Ltd | Lens for reading original |
| US5528428A (en) * | 1991-11-13 | 1996-06-18 | Nikon Corporation | Compact wide-angle objective lens |
| TW200819781A (en) * | 2006-10-30 | 2008-05-01 | Young Optics Inc | Fixed-focus lens |
| JP2010008562A (en) * | 2008-06-25 | 2010-01-14 | Konica Minolta Opto Inc | Imaging lens |
-
2011
- 2011-01-31 TW TW100103716A patent/TWI491951B/en active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04184311A (en) * | 1990-11-19 | 1992-07-01 | Ricoh Co Ltd | Lens for reading original |
| US5528428A (en) * | 1991-11-13 | 1996-06-18 | Nikon Corporation | Compact wide-angle objective lens |
| TW200819781A (en) * | 2006-10-30 | 2008-05-01 | Young Optics Inc | Fixed-focus lens |
| JP2010008562A (en) * | 2008-06-25 | 2010-01-14 | Konica Minolta Opto Inc | Imaging lens |
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|---|---|
| TW201403165A (en) | 2014-01-16 |
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