TWI747731B - Optical imaging lens, imaging device, and electronic device - Google Patents
Optical imaging lens, imaging device, and electronic device Download PDFInfo
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本發明係有關於一種光學影像擷取透鏡組及成像裝置,特別是有關適用於車用攝影電子裝置或監控攝影系統之光學影像擷取透鏡組、成像裝置及電子裝置。 The present invention relates to an optical image capturing lens group and an imaging device, in particular to an optical image capturing lens group, an imaging device and an electronic device suitable for an automotive photographic electronic device or a surveillance camera system.
隨著半導體製程技術不斷地精進,使得影像感測元件的畫素可以達到更微小的尺寸,性能顯著地提升,因此,具備高成像品質的光學鏡頭已成為電子攝像裝置中不可或缺的一環。 With the continuous advancement of semiconductor process technology, the pixels of the image sensor element can reach a smaller size, and the performance has been significantly improved. Therefore, an optical lens with high imaging quality has become an indispensable part of electronic camera devices.
而隨著電子攝像裝置的多元化發展,其應用範圍愈加地廣泛,例如先進駕駛輔助系統(ADAS)、行車記錄器、家用監控攝影設備、智慧型手機及人機互動裝置等,光學鏡頭的設計要求也更加地多樣化。就車用攝影裝置而言,為了清楚地辨識車輛四周的障礙物或二側的來車,需要提高光學鏡頭的解析度及明亮度,同時要求對環境溫度具有高度適應性。此外,為了良好地修正各種像差,特別是在量測距離或者物體辨識的用途,若在拍攝的影像中存在較大畸變像差時,計算距離或影像辨識時將容易產生誤差。 With the diversified development of electronic camera devices, their applications have become more and more extensive, such as advanced driver assistance systems (ADAS), driving recorders, home surveillance camera equipment, smart phones and human-computer interaction devices, etc., optical lens design The requirements are also more diverse. In terms of vehicle photography devices, in order to clearly recognize the obstacles around the vehicle or the oncoming vehicles on both sides, the resolution and brightness of the optical lens need to be improved, and at the same time, it is required to have a high degree of adaptability to the ambient temperature. In addition, in order to properly correct various aberrations, especially for distance measurement or object recognition purposes, if there is a large distortion in the captured image, errors are likely to occur when calculating the distance or image recognition.
是以,如何設計一種光學成像裝置,使其在小型化、高解析度及良好的光學成像品質之間取得平衡,已成為此技術領域者努力的目標。 Therefore, how to design an optical imaging device to achieve a balance between miniaturization, high resolution, and good optical imaging quality has become the goal of this technical field.
是以,為解決上述問題,本發明提供一種光學影像擷取透鏡組,由物側至像側依序包含第一透鏡、第二透鏡、第三透鏡、第四透鏡、光圈、第五透鏡、第六透鏡及第七透鏡。其中,第一透鏡具有負屈折力,其物側面為凸面、像側面為凹面;第二透鏡具有負屈折力,其物側面為凸面、像側面為凹面;第三透鏡具有負屈折力,其物側面為凹面、像側面為凸面;第四透鏡,具有正屈折力,其物側面為凸面;第五透鏡具有正屈折力,其物側面為凸面、像側面為凸面;第六透鏡具有負屈折力,其物側面為凹面、像側面為凸面,其中,該第五透鏡及該第六透鏡構成一膠合透鏡;第七透鏡具有正屈折力,其物側面為凸面、像側面為凹面;其中,光學影像擷取透鏡組之透鏡總數為七片;其中,第一透鏡之焦距為f1,第三透鏡之焦距為f3,係滿足以下關係式:0.95<f3/f1<6.2。 Therefore, in order to solve the above-mentioned problems, the present invention provides an optical image capturing lens assembly, which sequentially includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, and a lens from the object side to the image side. The sixth lens and the seventh lens. Among them, the first lens has negative refractive power, the object side is convex, and the image side is concave; the second lens has negative refractive power, the object side is convex, and the image side is concave; the third lens has negative refractive power, and its object The side surface is concave and the image side surface is convex; the fourth lens has positive refractive power, and its object side is convex; the fifth lens has positive refractive power, its object side is convex, and the image side is convex; the sixth lens has negative refractive power , The object side is concave, and the image side is convex, wherein the fifth lens and the sixth lens form a cemented lens; the seventh lens has positive refractive power, the object side is convex, and the image side is concave; among them, optical The total number of lenses in the image capturing lens group is seven; among them, the focal length of the first lens is f1, and the focal length of the third lens is f3, which satisfies the following relationship: 0.95<f3/f1<6.2.
根據本發明之一實施例,所述第四透鏡像側面至第五透鏡物側面在光軸上之距離為AT45,整體光學影像擷取透鏡組之焦距為EFL,係滿足以下關係式:0.4<AT45/EFL<1.3。 According to an embodiment of the present invention, the distance from the image side of the fourth lens to the object side of the fifth lens on the optical axis is AT45, and the focal length of the overall optical image capturing lens group is EFL, which satisfies the following relationship: 0.4< AT45/EFL<1.3.
根據本發明之一實施例,所述第一透鏡之焦距為f2,其與第三透鏡之焦距f3,係滿足以下關係式:2.9<f3/f2<7。 According to an embodiment of the present invention, the focal length of the first lens is f2, and the focal length f3 of the third lens satisfies the following relationship: 2.9<f3/f2<7.
本發明又提供一種光學影像擷取透鏡組,由物側至像側依序包含第一透鏡、第二透鏡、第三透鏡、第四透鏡、光圈、第五透鏡、第六透鏡及第七透鏡。其中,第一透鏡具有負屈折力,其物側面為凸面、像側面為凹面;第二透鏡具有負屈折力,其物側面為凸面、像側面為凹面;第三透鏡具有負屈折力,其物側面為凹面、像側面為凸面;第四透鏡,具有正屈折力,其物側面為凸面;第五透鏡具有正屈折力,其物側面為凸面、像側面為凸面;第六透鏡具 有負屈折力,其物側面為凹面、像側面為凸面,其中,第五透鏡及第六透鏡構成一膠合透鏡;第七透鏡具有正屈折力,其物側面為凸面、像側面為凹面;其中,光學影像擷取透鏡組之透鏡總數為七片;其中,第二透鏡之焦距為f2,第三透鏡之焦距為f3,第六透鏡像側面至第七透鏡物側面在光軸上之距離為AT67,第七透鏡物側面之曲率半徑為R13,係滿足以下關係式:2.9<f3/f2<7;及0.1<AT67/R13<0.6。 The present invention also provides an optical image capturing lens group, which includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens, and a seventh lens in sequence from the object side to the image side . Among them, the first lens has negative refractive power, the object side is convex, and the image side is concave; the second lens has negative refractive power, the object side is convex, and the image side is concave; the third lens has negative refractive power, and its object The side surface is concave and the image side surface is convex; the fourth lens has positive refractive power, and its object side surface is convex; the fifth lens has positive refractive power, its object side surface is convex, and the image side surface is convex; the sixth lens has positive refractive power. It has negative refractive power, the object side is concave, and the image side is convex. Among them, the fifth lens and the sixth lens form a cemented lens; the seventh lens has positive refractive power, and the object side is convex and the image side is concave; , The total number of lenses in the optical image capturing lens group is seven; among them, the focal length of the second lens is f2, the focal length of the third lens is f3, and the distance between the image side of the sixth lens and the object side of the seventh lens on the optical axis is AT67, the curvature radius of the seventh lens object side is R13, which satisfies the following relationship: 2.9<f3/f2<7; and 0.1<AT67/R13<0.6.
根據本發明之一實施例,所述第四透鏡的焦距為f4,其與光學影像擷取透鏡組的有效焦距EFL之間,係滿足以下關係式:2<f4/EFL<3.5。 According to an embodiment of the present invention, the focal length of the fourth lens is f4, and the effective focal length EFL of the optical image capturing lens group satisfies the following relationship: 2<f4/EFL<3.5.
根據本發明之一實施例,所述第五透鏡與第六透鏡之組合焦距為f56,其與整體光學影像擷取透鏡組的有效焦距EFL之間,係滿足以下關係式:2.7<f56/EFL<7.5。 According to an embodiment of the present invention, the combined focal length of the fifth lens and the sixth lens is f56, and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship: 2.7<f56/EFL <7.5.
根據本發明之一實施例,所述第五透鏡像側面之曲率半徑為R10,其與整體光學影像擷取透鏡組之有效焦距EFL之間,係滿足以下關係式:-1.5<R10/EFL<-0.9。 According to an embodiment of the present invention, the radius of curvature of the image side surface of the fifth lens is R10, and the relationship between it and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship: -1.5<R10/EFL< -0.9.
根據本發明之一實施例,所述光圈至光學影像擷取透鏡組之成像面在光軸上之距離為SL,而所述第一透鏡物側面至光學影像擷取透鏡組之成像面在光軸上之距離為TTL,二者之間係滿足以下關係式:0.4<SL/TTL<0.7。 According to an embodiment of the present invention, the distance from the aperture to the imaging surface of the optical image capturing lens group on the optical axis is SL, and the object side of the first lens to the imaging surface of the optical image capturing lens group is in the optical axis. The distance on the axis is TTL, and the relationship between the two is satisfied: 0.4<SL/TTL<0.7.
根據本發明之一實施例,所述第一透鏡物側面之曲率半徑為R1、像側面之曲率半徑為R2,係滿足以下關係式:1.3<R1/R2<3.2。 According to an embodiment of the present invention, the radius of curvature of the object side surface of the first lens is R1 and the radius of curvature of the image side surface is R2, which satisfies the following relationship: 1.3<R1/R2<3.2.
根據本發明之一實施例,所述第一透鏡物側面之曲率半徑為R1,第二透鏡像側面之曲率半徑為R4,整體光學影像擷取透鏡組之有效焦距為EFL,係滿足以下關係式:0.8<EFL/R1+EFL/R4<1.4。 According to an embodiment of the present invention, the radius of curvature of the object side of the first lens is R1, the radius of curvature of the image side of the second lens is R4, and the effective focal length of the overall optical image capturing lens group is EFL, which satisfies the following relationship : 0.8<EFL/R1+EFL/R4<1.4.
根據本發明之一實施例,所述第一透鏡至第七透鏡在光軸上之厚度總和為ΣCT,第一透鏡物側面至第七透鏡像側面在光軸上之距離為Dr1r14,係滿足以下關係式:0.4<ΣCT/Dr1r14<0.65。 According to an embodiment of the present invention, the total thickness of the first lens to the seventh lens on the optical axis is ΣCT, and the distance from the object side of the first lens to the image side of the seventh lens on the optical axis is Dr1r14, which satisfies the following Relational formula: 0.4<ΣCT/Dr1r14<0.65.
根據本發明之一實施例,所述第一透鏡物側面至光學影像擷取透鏡組之成像面在光軸上之距離為TTL,光學影像擷取透鏡組在成像面上之最大像高為ImgH,係滿足以下關係式:4<TTL/ImgH<7.5。 According to an embodiment of the present invention, the distance from the object side of the first lens to the imaging surface of the optical image capturing lens group on the optical axis is TTL, and the maximum image height of the optical image capturing lens group on the imaging surface is ImgH , The system satisfies the following relationship: 4<TTL/ImgH<7.5.
根據本發明之一實施例,所述第五透鏡之色散係數為Vd5,第六透鏡之色散係數為Vd6,係滿足以下關係式:Vd5>Vd6。 According to an embodiment of the present invention, the dispersion coefficient of the fifth lens is Vd5, and the dispersion coefficient of the sixth lens is Vd6, which satisfies the following relationship: Vd5>Vd6.
根據本發明之一實施例,所述第四透鏡之色散係數為Vd4,係滿足以下關係式:Vd4<45。 According to an embodiment of the present invention, the dispersion coefficient of the fourth lens is Vd4, which satisfies the following relationship: Vd4<45.
根據本發明之一實施例,所述光學影像擷取透鏡組包含至少二片折射率大於等於1.7之透鏡。 According to an embodiment of the present invention, the optical image capturing lens group includes at least two lenses with a refractive index greater than or equal to 1.7.
本發明進一步提供一種成像裝置,其包含如前述之光學影像擷取透鏡組,及一影像感測元件,其中,所述影像感測元件係設置於所述光學影像擷取透鏡組之成像面。 The present invention further provides an imaging device including the aforementioned optical image capturing lens group and an image sensing element, wherein the image sensing element is disposed on the imaging surface of the optical image capturing lens group.
本發明更提供一種電子裝置,其包含如前述之成像裝置。 The present invention further provides an electronic device, which includes the aforementioned imaging device.
100、200、300、400、500、600、700、800:光學影像擷取透鏡組 100, 200, 300, 400, 500, 600, 700, 800: optical image capture lens group
101、201、301、401、501、601、701、801:第一透鏡 101, 201, 301, 401, 501, 601, 701, 801: first lens
102、202、302、402、502、602、702、802:第二透鏡 102, 202, 302, 402, 502, 602, 702, 802: second lens
103、203、303、403、503、603、703、803:第三透鏡 103, 203, 303, 403, 503, 603, 703, 803: third lens
104、204、304、404、504、604、704、804:第四透鏡 104, 204, 304, 404, 504, 604, 704, 804: fourth lens
105、205、305、405、505、605、705、805:第五透鏡 105, 205, 305, 405, 505, 605, 705, 805: fifth lens
106、206、306、406、506、606、706、806:第六透鏡 106, 206, 306, 406, 506, 606, 706, 806: sixth lens
107、207、307、407、507、607、707、807:第七透鏡 107, 207, 307, 407, 507, 607, 707, 807: seventh lens
108、208、308、408、508、608、708、808:濾光元件 108, 208, 308, 408, 508, 608, 708, 808: filter element
109、209、309、409、509、609、709、809:保護玻璃 109, 209, 309, 409, 509, 609, 709, 809: protective glass
110、210、310、410、510、610、710、810:成像面 110, 210, 310, 410, 510, 610, 710, 810: imaging surface
101a、201a、301a、401a、501a、601a、701a、801a:第一透鏡之物側面 101a, 201a, 301a, 401a, 501a, 601a, 701a, 801a: the object side of the first lens
101b、201b、301b、401b、501b、601b、701b、801b:第一透鏡之像側面 101b, 201b, 301b, 401b, 501b, 601b, 701b, 801b: the image side of the first lens
102a、202a、302a、402a、502a、602a、702a、802a:第二透鏡之物側面 102a, 202a, 302a, 402a, 502a, 602a, 702a, 802a: the object side of the second lens
102b、202b、302b、402b、502b、602b、702b、802b:第二透鏡之像側面 102b, 202b, 302b, 402b, 502b, 602b, 702b, 802b: the image side of the second lens
103a、203a、303a、403a、503a、603a、703a、803a:第三透鏡之物側面 103a, 203a, 303a, 403a, 503a, 603a, 703a, 803a: the object side of the third lens
103b、203b、303b、403b、503b、603b、703b、803b:第三透鏡之像側面 103b, 203b, 303b, 403b, 503b, 603b, 703b, 803b: the image side of the third lens
104a、204a、304a、404a、504a、604a、704a、804a:第四透鏡之物側面 104a, 204a, 304a, 404a, 504a, 604a, 704a, 804a: the object side of the fourth lens
104b、204b、304b、404b、504b、604b、704b、804b:第四透鏡之像側面 104b, 204b, 304b, 404b, 504b, 604b, 704b, 804b: the image side of the fourth lens
105a、205a、305a、405a、505a、605a、705a、805a:第五透鏡之物側面 105a, 205a, 305a, 405a, 505a, 605a, 705a, 805a: the object side of the fifth lens
105b、205b、305b、405b、505b、605b、705b、805b:第五透鏡之像側面 105b, 205b, 305b, 405b, 505b, 605b, 705b, 805b: the image side of the fifth lens
106a、206a、306a、406a、506a、606a、706a、806a:第六透鏡之物側面 106a, 206a, 306a, 406a, 506a, 606a, 706a, 806a: the object side of the sixth lens
106b、206b、306b、406b、506b、606b、706b、806b:第六透鏡之像側面 106b, 206b, 306b, 406b, 506b, 606b, 706b, 806b: the image side of the sixth lens
107a、207a、307a、407a、507a、607a、707a、807a:第七透鏡之物側面 107a, 207a, 307a, 407a, 507a, 607a, 707a, 807a: the object side of the seventh lens
107b、207b、307b、407b、507b、607b、707b、807b:第七透鏡之像側面 107b, 207b, 307b, 407b, 507b, 607b, 707b, 807b: the image side of the seventh lens
108a、108b、208a、208b、308a、308b、408a、408b、508a、508b、608a、608b、708a、708b、808a、708b:濾光元件之二表面 108a, 108b, 208a, 208b, 308a, 308b, 408a, 408b, 508a, 508b, 608a, 608b, 708a, 708b, 808a, 708b: the second surface of the filter element
109a、109b、209a、209b、309a、309b、409a、409b、509a、509b、609a、609b、709a、709b、809a、809b:保護玻璃之二表面 109a, 109b, 209a, 209b, 309a, 309b, 409a, 409b, 509a, 509b, 609a, 609b, 709a, 709b, 809a, 809b: protective glass two surface
120、220、320、420、520、620、720、820:影像感測元件 120, 220, 320, 420, 520, 620, 720, 820: image sensor
1000:電子裝置 1000: Electronic device
1010:成像裝置 1010: imaging device
I:光軸 I: Optical axis
ST:光圈 ST: Aperture
〔圖1A〕為本發明第一實施例之光學影像擷取透鏡組示意圖;〔圖1B〕由左至右依序為本發明第一實施例之縱向球差圖、像散場曲像差圖及畸變像差圖; 〔圖2A〕為本發明第二實施例之光學影像擷取透鏡組示意圖;〔圖2B〕由左至右依序為本發明第二實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖3A〕為本發明第三實施例之光學影像擷取透鏡組示意圖;〔圖3B〕由左至右依序為本發明第三實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖4A〕為本發明第四實施例之光學影像擷取透鏡組示意圖;〔圖4B〕由左至右依序為本發明第四實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖5A〕為本發明第五實施例之光學影像擷取透鏡組示意圖;〔圖5B〕由左至右依序為本發明第五實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖6A〕為本發明第六實施例之光學影像擷取透鏡組示意圖;〔圖6B〕由左至右依序為本發明第六實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖7A〕為本發明第七實施例之光學影像擷取透鏡組示意圖;〔圖7B〕由左至右依序為本發明第七實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;〔圖8A〕為本發明第八實施例之光學影像擷取透鏡組示意圖;〔圖8B〕由左至右依序為本發明第八實施例之縱向球差圖、像散場曲像差圖及畸變像差圖;及〔圖9〕為本發明第十實施例之電子裝置之示意圖。 [Fig. 1A] is a schematic diagram of the optical image capturing lens group of the first embodiment of the present invention; [Fig. 1B] is the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram and the diagram from left to right of the first embodiment of the present invention. Distortion aberration map; [Fig. 2A] is a schematic diagram of the optical image capturing lens group according to the second embodiment of the present invention; [Fig. 2B] is the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram and the diagram from left to right of the second embodiment of the present invention in order Distortion aberration diagram; [FIG. 3A] is a schematic diagram of the optical image capturing lens group of the third embodiment of the present invention; [FIG. 3B] is the longitudinal spherical aberration diagram and astigmatic field of the third embodiment of the present invention in order from left to right Curved aberration diagram and distortion diagram; [FIG. 4A] is a schematic diagram of the optical image capturing lens group of the fourth embodiment of the present invention; [FIG. 4B] is the longitudinal ball of the fourth embodiment of the present invention in order from left to right Aberration diagram, astigmatic field curvature aberration diagram, and distortion aberration diagram; [FIG. 5A] is a schematic diagram of the optical image capturing lens group of the fifth embodiment of the present invention; [FIG. 5B] is the fifth embodiment of the present invention in order from left to right The longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the embodiment; [FIG. 6A] is a schematic diagram of the optical image capturing lens group of the sixth embodiment of the present invention; [FIG. 6B] Sequentially from left to right It is the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the sixth embodiment of the present invention; [FIG. 7A] is a schematic diagram of the optical image capturing lens group of the seventh embodiment of the present invention; [FIG. 7B] From left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the seventh embodiment of the present invention in sequence; [FIG. 8A] is a schematic diagram of the optical image capturing lens group of the eighth embodiment of the present invention; [FIG. 8B] From left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the eighth embodiment of the present invention; and [FIG. 9] is the electronic device of the tenth embodiment of the present invention The schematic diagram.
在以下實施例中,光學影像擷取透鏡組之各透鏡可為玻璃或塑膠材質,而不以實施例所列舉之材質為限。當透鏡材質為玻璃時,透鏡表面可透過研磨方式或模造的方式進行加工;此外,由於玻璃材質本身耐溫度變化及高硬度特性,可以減輕環境變化對光學影像擷取透鏡組的影響,進而延長光學影像擷取透鏡組的使用壽命。當透鏡材質為塑膠時,則有利於減輕光學影像擷取透鏡組的重量,及降低生產成本。 In the following embodiments, each lens of the optical image capturing lens group can be made of glass or plastic, and is not limited to the materials listed in the embodiments. When the lens material is glass, the lens surface can be processed by grinding or molding; in addition, due to the temperature change and high hardness of the glass material itself, the impact of environmental changes on the optical image capturing lens group can be reduced, thereby extending The service life of the optical image capturing lens group. When the lens material is plastic, it is beneficial to reduce the weight of the optical image capturing lens group and reduce the production cost.
在本發明之實施例中,每一個透鏡皆包含朝向被攝物之一物側面,及朝向成像面之一像側面。每一個透鏡的表面形狀係依據所述表面靠近光軸區域(近軸處)的形狀加以定義,例如描述一個透鏡之物側面為凸面時,係表示該透鏡在靠近光軸區域的物側面為凸面,亦即,雖然在實施例中描述該透鏡表面為凸面,而該表面在遠離光軸區域(離軸處)可能是凸面或凹面。每一個透鏡近軸處的形狀係以該面之曲率半徑為正值或負值加以判斷,例如,若一個透鏡之物側面曲率半徑為正值時,則該物側面為凸面;反之,若其曲率半徑為負值,則該物側面為凹面。就一個透鏡之像側面而言,若其曲率半徑為正值,則該像側面為凹面;反之,若其曲率半徑為負值,則該像側面為凸面。 In the embodiment of the present invention, each lens includes an object side facing the object and an image side facing the imaging surface. The surface shape of each lens is defined according to the shape of the area near the optical axis (paraxial) of the surface. For example, when the object side of a lens is described as convex, it means that the object side of the lens near the optical axis is convex. That is, although the lens surface is described as a convex surface in the embodiment, the surface may be convex or concave in the region away from the optical axis (off-axis). The shape of each lens near the axis is judged by the positive or negative curvature radius of the surface. For example, if the curvature radius of the object side surface of a lens is positive, the object side surface is convex; otherwise, if it is If the radius of curvature is negative, the side surface of the object is concave. As for the image side surface of a lens, if its radius of curvature is positive, the image side surface is concave; conversely, if its radius of curvature is negative, the image side surface is convex.
在本發明之實施例中,每一透鏡的物側面及像側面可以是球面或非球面表面。在透鏡上使用非球面表面有助於修正如球面像差等光學影像擷取透鏡組的成像像差,減少光學透鏡元件的使用數量。然而,使用非球面透鏡會使整體光學影像擷取透鏡組的成本提高。雖然在本發明之實施例中,有些光學透鏡的表面係使用球面表面,但仍可以視需要將其設計為非球面表面;或者,有些光學透鏡的表面係使用非球面表面,但仍可以視需要將其設計為球面表面。 In the embodiment of the present invention, the object side surface and the image side surface of each lens may be spherical or aspherical surfaces. The use of an aspheric surface on the lens helps correct the imaging aberrations of the optical image capturing lens group such as spherical aberration and reduces the number of optical lens components used. However, the use of an aspheric lens increases the cost of the overall optical image capturing lens group. Although in the embodiments of the present invention, the surface of some optical lenses uses a spherical surface, it can still be designed as an aspheric surface if necessary; or, the surface of some optical lenses uses an aspheric surface, but it can still be designed as needed. Design it as a spherical surface.
在本發明之實施例中,光學影像擷取透鏡組之總長TTL(Total Track Length)定義為此光學影像擷取透鏡組之第一透鏡的物側面至成像面在光軸上之距離。此光學影像擷取透鏡組之成像高度稱為最大像高ImgH(Image Height);當成像面上設置一影像感測元件時,最大像高ImgH代表影像感測元件的有效感測區域對角線長度之一半。在以下實施例中,所有透鏡的曲率半徑、透鏡厚度、透鏡之間的距離、透鏡組總長TTL、最大像高ImgH和焦距(Focal Length)的單位皆以公厘(mm)加以表示。 In the embodiment of the present invention, the total track length (TTL) of the optical image capturing lens group is defined as the distance from the object side of the first lens of the optical image capturing lens group to the imaging surface on the optical axis. The imaging height of this optical image capturing lens group is called the maximum image height ImgH (Image Height); when an image sensor element is set on the imaging surface, the maximum image height ImgH represents the diagonal of the effective sensing area of the image sensor element Half the length. In the following embodiments, the units of curvature radius of all lenses, lens thickness, distance between lenses, total lens group length TTL, maximum image height ImgH, and focal length (Focal Length) are all expressed in millimeters (mm).
本發明提供一種光學影像擷取透鏡組,由物側至像側依序包含第一透鏡、第二透鏡、第三透鏡、第四透鏡、光圈、第五透鏡、第六透鏡及第七透鏡。其中,第一透鏡,具有負屈折力,其物側面為凸面、像側面為凹面;第二透鏡,具有負屈折力,其物側面為凸面、像側面為凹面;第三透鏡,具有負屈折力,其物側面為凹面、像側面為凸面;第四透鏡,具有正屈折力,其物側面為凸面;第五透鏡,具有正屈折力,其物側面為凸面、像側面為凸面;第六透鏡,具有負屈折力,其物側面為凹面、像側面為凸面,其中,第五透鏡及第六透鏡構成一膠合透鏡;第七透鏡,具有負屈折力,其物側面為凸面、像側面為凹面;此光學影像擷取透鏡組之透鏡總數為七片。 The invention provides an optical image capturing lens group, which includes a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens, and a seventh lens in sequence from the object side to the image side. Among them, the first lens has negative refractive power, the object side is convex, and the image side is concave; the second lens has negative refractive power, the object side is convex, and the image side is concave; the third lens has negative refractive power , The object side is concave and the image side is convex; the fourth lens has positive refractive power, and the object side is convex; the fifth lens has positive refractive power, the object side is convex, and the image side is convex; the sixth lens , Has negative refractive power, the object side is concave, the image side is convex, wherein the fifth lens and the sixth lens form a cemented lens; the seventh lens has negative refractive power, its object side is convex, and the image side is concave ; The total number of lenses in this optical image capturing lens group is seven.
第一透鏡具有負屈折力,其物側面為凸面、像側面為凹面,有利於形成廣視角結構,提高光學影像擷取透鏡組的收光範圍。 The first lens has a negative refractive power, and its object side surface is a convex surface and the image side surface is a concave surface, which is conducive to forming a wide viewing angle structure and increasing the light collection range of the optical image capturing lens group.
第二透鏡亦具有負屈折力,其物側面為凸面、像側面為凹面,有助於修正大角度入射光線所形成之像差,且藉由連續設置二片負透鏡於透鏡組的前端,可以使此光學影像擷取透鏡組具有適當的後焦距長度,避免後焦距過長,造成整體光學影像擷取透鏡組的體積增加,不利於小型化。 The second lens also has negative refractive power. The object side is convex and the image side is concave, which helps correct aberrations caused by incident light at a large angle. By continuously arranging two negative lenses at the front end of the lens group, you can The optical image capturing lens group has an appropriate back focal length to prevent the back focal length from being too long, resulting in an increase in the volume of the overall optical image capturing lens group, which is not conducive to miniaturization.
第三透鏡具有負屈折力,其物側面為凹面、像側面為凸面,其中,第三透鏡之負屈折力低於所述第一透鏡及第二透鏡。藉由第三透鏡物側之凹面對應於第二透鏡像側之凹面,可以進一步改變大角度光線的傳遞方向,縮減光線與光軸間之夾角,進而降低成像像差。 The third lens has a negative refractive power, the object side surface is a concave surface, and the image side surface is a convex surface, wherein the negative refractive power of the third lens is lower than that of the first lens and the second lens. With the concave surface on the object side of the third lens corresponding to the concave surface on the image side of the second lens, the transmission direction of the large-angle light can be further changed, the angle between the light and the optical axis can be reduced, and the imaging aberration can be reduced.
第四透鏡具正屈折力,其物側面為凸面。藉由第一透鏡、第二透鏡及第三透鏡之負屈力形成的光線發散作用,及具正屈折力之第四透鏡的光線會聚作用,可以有效地降低光學影像擷取透鏡組的球面像差。 The fourth lens has positive refractive power, and its object side surface is convex. The light divergence formed by the negative refractive power of the first lens, the second lens and the third lens, and the light converging effect of the fourth lens with positive refractive power can effectively reduce the spherical image of the optical image capturing lens group Difference.
第五透鏡具有正屈折力,其物側面為凸面、像側面為凸面。第六透鏡具有負屈折力,其物側面為凹面、像側面為凸面。第五透鏡與第六透鏡係彼此黏合形成一膠合透鏡。此膠合透鏡可以有助於修正光學影像擷取透鏡組的色像差。 The fifth lens has a positive refractive power, the object side is convex, and the image side is convex. The sixth lens has negative refractive power, its object side is concave, and the image side is convex. The fifth lens and the sixth lens are bonded to each other to form a cemented lens. The cemented lens can help correct the chromatic aberration of the optical image capturing lens group.
第七透鏡具有正屈折力,其物側面為凸面、像側面為凹面。第七透鏡之物側面與第六透鏡之像側面凸面相對,有助於修正光學影像擷取透鏡組的場曲像差。 The seventh lens has positive refractive power, its object side surface is convex, and the image side surface is concave. The object side surface of the seventh lens is opposite to the convex surface of the image side surface of the sixth lens, which helps to correct the curvature of field aberration of the optical image capturing lens group.
所述光學影像擷取透鏡組之第一透鏡的焦距為f1,第三透鏡的焦距為f3,係滿足以下關係式:0.95<f3/f1<6.2; (1) The focal length of the first lens of the optical image capturing lens group is f1, and the focal length of the third lens is f3, which satisfies the following relationship: 0.95<f3/f1<6.2; (1)
藉由滿足關係式(1)的條件,可以控制第一透鏡與第三透鏡之之間的屈折力比例。若f3/f1低於關係式(1)的下限值,則第一透鏡的負屈折力不足,會降低光學影像擷取透鏡組的收光範圍,不易形成廣視角結構;若f3/f1高於關係式(1)的上限值,會增加後焦距BFL的長度,且較不利於修正像差。 By satisfying the condition of relation (1), the ratio of refractive power between the first lens and the third lens can be controlled. If f3/f1 is lower than the lower limit of the relational formula (1), the negative refractive power of the first lens will be insufficient, which will reduce the light-receiving range of the optical image capturing lens group, making it difficult to form a wide viewing angle structure; if f3/f1 is high The upper limit value of relation (1) will increase the length of the back focus BFL, and it is not conducive to correcting aberrations.
較佳地,所述光學影像擷取透鏡組之第四透鏡像側面至第五透鏡物側面在光軸上之距離為AT45,而整體光學影像擷取透鏡組之焦距為EFL,係滿足以下關係式:0.4<AT45/EFL<1.3; (2) Preferably, the distance on the optical axis from the image side surface of the fourth lens to the object side surface of the fifth lens of the optical image capturing lens group is AT45, and the focal length of the overall optical image capturing lens group is EFL, which satisfies the following relationship Formula: 0.4<AT45/EFL<1.3; (2)
藉由滿足關係式(2)的條件,可以在光圈二側對稱地設置同樣具有正屈折力之第四透鏡與第五透鏡,且使二透鏡間維持一適當之間距,以利於修正像差。 By satisfying the condition of relational expression (2), the fourth lens and the fifth lens that also have positive refractive power can be symmetrically arranged on both sides of the aperture, and an appropriate distance between the two lenses can be maintained to facilitate correction of aberrations.
所述光學影像擷取透鏡組之第一透鏡之焦距為f2,第三透鏡之焦距為f3,係滿足以下關係式:2.9<f3/f2<7; (3) The focal length of the first lens of the optical image capturing lens group is f2, and the focal length of the third lens is f3, which satisfies the following relationship: 2.9<f3/f2<7; (3)
藉由滿足關係式(3)的條件,可以控制第二透鏡與第三透鏡之之間的屈折力比例。若f3/f2低於關係式(1)的下限值,易造成光學影像擷取透鏡組第二透鏡的負屈折力過低,不利於引導光線趨近光軸;若f3/f2高於關係式(1)的上限值,則第三透鏡的負屈折力過低,降低第三透鏡配合第四透鏡以修正像差的效果。 By satisfying the condition of relation (3), the ratio of refractive power between the second lens and the third lens can be controlled. If f3/f2 is lower than the lower limit of the relationship (1), the negative refractive power of the second lens of the optical image capturing lens group is likely to be too low, which is not conducive to guiding the light toward the optical axis; if f3/f2 is higher than the relation The upper limit of the formula (1) means that the negative refractive power of the third lens is too low, which reduces the effect of the third lens with the fourth lens to correct aberrations.
較佳地,所述光學影像擷取透鏡組之第六透鏡像側面至第七透鏡物側面在光軸上之距離為AT67,第七透鏡物側面之曲率半徑為R13,係滿足以下關係式:0.1<AT67/R13<0.6; (4) Preferably, the distance on the optical axis from the image side surface of the sixth lens to the object side surface of the seventh lens of the optical image capturing lens group is AT67, and the radius of curvature of the object side surface of the seventh lens is R13, which satisfies the following relationship: 0.1<AT67/R13<0.6; (4)
藉由滿足關係式(4)的條件,有助於在第六透鏡與第七透鏡之間維持一適當的間距,利用第六透鏡像側面與第七透鏡物側面之透鏡面形與空氣間隙以修正光學影像擷取透鏡組之像差。 By satisfying the condition of relation (4), it is helpful to maintain an appropriate distance between the sixth lens and the seventh lens. The lens surface shape and air gap between the sixth lens and the seventh lens are used to Correct the aberration of the optical image capturing lens group.
所述光學影像擷取透鏡組之第四透鏡之焦距為f4,其與整體光學影像擷取透鏡組之有效焦距EFL之間,係滿足以下關係式:2<f4/EFL<3.5; (5) The focal length of the fourth lens of the optical image capturing lens group is f4, and the effective focal length EFL of the overall optical image capturing lens group satisfies the following relationship: 2<f4/EFL<3.5; (5)
藉由滿足關係式(5)的條件,有利於縮小光學影像擷取透鏡組的體積,同時保有良好的光學性能。若f4/EFL低於關係式(5)的下限值,則第四透鏡的正屈折力過大,易使第四透鏡至成像面間之距離過短,不利於配置後方的透鏡群;若f4/EFL高於關係式(5)的上限值,則第四透鏡之正屈折力不足,難以平衡第一透鏡、第二透鏡及第三透鏡之負屈折力。 By satisfying the condition of relation (5), it is beneficial to reduce the volume of the optical image capturing lens group while maintaining good optical performance. If f4/EFL is lower than the lower limit of the relationship (5), the positive refractive power of the fourth lens is too large, and the distance between the fourth lens and the imaging surface is likely to be too short, which is not conducive to arranging the rear lens group; if f4 /EFL is higher than the upper limit of the relationship (5), the positive refractive power of the fourth lens is insufficient, and it is difficult to balance the negative refractive power of the first lens, the second lens, and the third lens.
所述光學影像擷取透鏡組之第五透鏡與第六透鏡之組合焦距為f56,其與光學影像擷取透鏡組之有效焦距EFL之間,係滿足以下關係式:2.7<f56/EFL<7.5; (6) The combined focal length of the fifth lens and the sixth lens of the optical image capturing lens group is f56, and the effective focal length EFL of the optical image capturing lens group satisfies the following relationship: 2.7<f56/EFL<7.5 ; (6)
藉由滿足關係式(6)的條件,可以使第五透鏡及第六透鏡構成之膠合透鏡具有適當之正屈折力,有利於降低色像差。 By satisfying the condition of relation (6), the cemented lens composed of the fifth lens and the sixth lens can have proper positive refractive power, which is beneficial to reduce chromatic aberration.
所述光學影像擷取透鏡組之第五透鏡像側面之曲率半徑為R10,其與光學影像擷取透鏡組之有效焦距EFL之間,係滿足以下關係式:-1.5<R10/EFL<-0.9; (7) The radius of curvature of the image side surface of the fifth lens of the optical image capturing lens group is R10, and the relationship between it and the effective focal length EFL of the optical image capturing lens group satisfies the following relationship: -1.5<R10/EFL<-0.9 ; (7)
藉由滿足關係式(7)的條件,可以控制第五透鏡與第六透鏡之膠合面具有適當之曲率半徑,同樣有利於降低色像差。 By satisfying the condition of relational formula (7), the bonding surface of the fifth lens and the sixth lens can be controlled to have an appropriate radius of curvature, which is also beneficial to reduce chromatic aberrations.
所述光學影像擷取透鏡組之光圈至光學影像擷取透鏡組的成像面在光軸上之距離為SL,第一透鏡物側面至光學影像擷取透鏡組之成像面在光軸上之距離為TTL,係滿足以下關係式:0.4<SL/TTL<0.7; (8) The distance from the aperture of the optical image capturing lens group to the imaging surface of the optical image capturing lens group on the optical axis is SL, the distance from the object side of the first lens to the imaging surface of the optical image capturing lens group on the optical axis It is TTL, which satisfies the following relationship: 0.4<SL/TTL<0.7; (8)
藉由滿足關係式(8)的條件,可以將光圈設置於光學影像擷取透鏡組中之適當位置,有利於降低光學影像擷取透鏡組之畸變像差。 By satisfying the condition of relational expression (8), the aperture can be set at an appropriate position in the optical image capturing lens group, which is beneficial to reduce the distortion aberration of the optical image capturing lens group.
所述光學影像擷取透鏡組之第一透鏡物側面之曲率半徑為R1、像側面之曲率半徑為R2,係滿足以下關係式:1.3<R1/R2<3.2; (9) The curvature radius of the object side surface of the first lens of the optical image capturing lens group is R1, and the curvature radius of the image side surface is R2, which satisfies the following relationship: 1.3<R1/R2<3.2; (9)
藉由滿足關係式(9)的條件,有利於擴大收光範圍,提高成像視角。 By satisfying the condition of relation (9), it is beneficial to expand the light receiving range and improve the imaging angle of view.
所述光學影像擷取透鏡組之第一透鏡物側面之曲率半徑為R1,第二透鏡像側面之曲率半徑為R4,係滿足以下關係式:0.8<EFL/R1+EFL/R4<1.4; (10) The curvature radius of the first lens object side of the optical image capturing lens group is R1, and the curvature radius of the second lens image side is R4, which satisfies the following relationship: 0.8<EFL/R1+EFL/R4<1.4; ( 10)
藉由滿足關係式(10)的條件,有利於控制第一透鏡物側面及第二透鏡像側面之形狀,以利擴大視角及降低成像像差。 By satisfying the condition of relational expression (10), it is advantageous to control the shape of the object side surface of the first lens and the image side surface of the second lens, so as to expand the viewing angle and reduce the imaging aberration.
所述光學影像擷取透鏡組之第一透鏡至第七透鏡在光軸上之厚度總和為Σ CT,該第一透鏡物側面至該第七透鏡像側面在光軸上之距離為Dr1r14,係滿足以下關係式:0.4<ΣCT/Dr1r14<0.65; (11) The total thickness of the first lens to the seventh lens of the optical image capturing lens group on the optical axis is ΣCT, and the distance from the object side of the first lens to the image side of the seventh lens on the optical axis is Dr1r14, which is Satisfy the following relationship: 0.4<ΣCT/Dr1r14<0.65; (11)
藉由滿足關係式(11)的條件,可用以調整第一透鏡至第七透鏡在光軸上之厚度總和與第一透鏡物側面至第七透鏡像側面在光軸上距離,二者間維持一適當之比例。 By satisfying the condition of relation (11), it can be used to adjust the total thickness of the first lens to the seventh lens on the optical axis and the distance between the object side of the first lens and the image side of the seventh lens on the optical axis. 1. Appropriate proportions.
所述光學影像擷取透鏡組之第一透鏡物側面至光學影像擷取透鏡組之成像面在光軸上之距離為TTL,而光學影像擷取透鏡組在成像面上之最大像高為ImgH,係滿足以下關係式:TTL/ImgH<7.5; (12) The distance from the object side of the first lens of the optical image capturing lens group to the imaging surface of the optical image capturing lens group on the optical axis is TTL, and the maximum image height of the optical image capturing lens group on the imaging surface is ImgH , The system satisfies the following relationship: TTL/ImgH<7.5; (12)
藉由滿足關係式(12)的條件,有利於降低光學影像擷取透鏡組的總長度。 By satisfying the condition of relation (12), it is beneficial to reduce the total length of the optical image capturing lens group.
所述光學影像擷取透鏡組之第五透鏡之色散係數為Vd5,第六透鏡之色散係數為Vd6,係滿足以下關係式:Vd5>Vd6; (13) The dispersion coefficient of the fifth lens of the optical image capturing lens group is Vd5, and the dispersion coefficient of the sixth lens is Vd6, which satisfies the following relationship: Vd5>Vd6; (13)
藉由滿足關係式(13)的條件,可以使此光學影像擷取透鏡組之膠合透鏡的正透鏡材料具有較低的色散特性、負透鏡材料具有較高的色散透性,藉此進一步降低光學影像擷取透鏡組的色像差。 By satisfying the condition of relation (13), the positive lens material of the cemented lens of the optical image capturing lens group can have lower dispersion characteristics, and the negative lens material has higher dispersion transmittance, thereby further reducing optical The chromatic aberration of the image capturing lens group.
所述光學影像擷取透鏡組之第四透鏡的色散係數為Vd4,係滿足以下關係式:Vd4<45; (14) The dispersion coefficient of the fourth lens of the optical image capturing lens group is Vd4, which satisfies the following relationship: Vd4<45; (14)
所述光學影像擷取透鏡組包含至少二片折射率大於等於1.7之透鏡,有利於降低光學影像擷取透鏡組的成像像差。 The optical image capturing lens group includes at least two lenses with a refractive index greater than or equal to 1.7, which is beneficial to reduce the imaging aberration of the optical image capturing lens group.
第一實施例The first embodiment
參見圖1A及圖1B,圖1A為本發明第一實施例之光學影像擷取透鏡組之示意圖。圖1B由左至右依序為本發明第一實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 1A and 1B, FIG. 1A is a schematic diagram of the optical image capturing lens group according to the first embodiment of the present invention. FIG. 1B shows the longitudinal spherical aberration map (Longitudinal Spherical Aberration), the astigmatism field curvature map (Astigmatism/Field Curvature) and the distortion aberration map (Distortion) in order from left to right of the first embodiment of the present invention.
如圖1A所示,第一實施例之光學影像擷取透鏡組100由物側至像側依序包含第一透鏡101、第二透鏡102、第三透鏡103、第四透鏡104、光圈ST、第五透鏡105、第六透鏡106及第七透鏡107。此光學影像擷取透鏡組100更可包含濾光元件108、保護玻璃109及成像面110。在成像面110上更可設置一影像感測元件120,以構成一成像裝置(未另標號)。
As shown in FIG. 1A, the optical image capturing
第一透鏡101具有負屈折力,其物側面101a為凸面、像側面101b為凹面,且其物側面101a及像側面101b皆為球面。第一透鏡101之材質為玻璃。
The
第二透鏡102具有負屈折力,其物側面102a為凸面、像側面102b為凹面,且其物側面102a及像側面102b皆為球面。第二透鏡102之材質為玻璃。
The
第三透鏡103具有負屈折力,其物側面103a為凹面、像側面103b為凸面,且物側面103a及像側面103b皆為非球面。第三透鏡103之材質為塑膠。
The
第四透鏡104具有正屈折力,其物側面104a為凸面,其像側面104b為凸面,且其物側面104a及像側面104b皆為球面。第四透鏡104之材質為玻璃。
The
第五透鏡105具有正屈折力,其物側面105a為凸面、像側面105b為凸面,且其物側面105a及像側面105b皆為球面。第五透鏡105之材質為玻璃。
The
第六透鏡106具有負屈折力,其物側面106a為凹面,其像側面106b為凸面,且其物側面106a及像側面106b皆為球面。第六透鏡106之材質為玻璃。其中,第五透鏡105之像側面105b與第六透鏡106之物側面106a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡107具有正屈折力,其物側面107a為凸面、像側面107b為凹面,且其物側面107a及像側面107b皆為非球面。第七透鏡107之材質為塑膠。
The
濾光元件108設置於第七透鏡107與成像面110之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件108之二表面108a、108b皆為平面,其材質為玻璃。
The
保護玻璃109設置於影像感測元件120之上,其二表面109a、109b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)120例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。 The image sensor (Image Sensor) 120 is, for example, a charge-coupled device (CCD) Image Sensor or a complementary metal oxide semiconductor sensor (CMOS Image Sensor).
上述各個非球面之曲線方程式表示如下:
其中,X:非球面上距離光軸為Y的點與非球面於光軸上之切面間的距離;Y:非球面上的點與光軸間之垂直距離;R:透鏡於近光軸處的曲率半徑;K:錐面係數;以及Ai:第i階非球面係數。 Among them, X: the distance between the point Y on the aspheric surface from the optical axis and the tangent surface of the aspheric surface on the optical axis; Y: the vertical distance between the point on the aspheric surface and the optical axis; R: the lens at the near optical axis The radius of curvature of; K: the conical coefficient; and Ai: the i-th aspheric coefficient.
請參見下方表一,其為本發明第一實施例之光學影像擷取透鏡組100的詳細光學數據。其中,第一透鏡101之物側面101a標示為表面101a、像側面101b標示為表面101b,其他各透鏡表面則依此類推。表中距離欄位的數值代表該表面至下一表面在光軸I上的距離,例如第一透鏡101之物側面101a至像側面101b之距離為0.5mm,代表第一透鏡101在光軸上的厚度為0.5mm。第一透鏡101之像側面101b至第二透鏡102之物側面102a之距離為1.4mm。其它可依此類推,以下不再重述。
Please refer to Table 1 below, which is the detailed optical data of the optical image capturing
第一實施例中,光學影像擷取透鏡組100之有效焦距為EFL,光圈值(F-number)為Fno,整體光學影像擷取透鏡組100最大視角之一半為HFOV(Half Field of View),第一透鏡101之物側面101a至成像面110在光軸I上之距離為總長TTL,其數值如下:EFL=2.36mm,Fno=1.5,TTL=19.54mm,HFOV=85度。以下各實施例的表格係對應至各實施例之光學影像擷取透鏡組,各表格的定義係與本實施例相同,故在以下實施例中不再加以贅述。
In the first embodiment, the effective focal length of the optical image capturing
請參見下方表二,其為本發明第一實施例各透鏡之各表面的非球面係數。其中,K為非球面曲線方程式中的錐面係數,A2至A14則代表各表面第2階至第14階非球面係數。例如第三透鏡103之物側面103a之錐面係數K為-0.225。其它可依此類推,以下不再重述。此外,以下各實施例的表格係對應至各實施例之光學影像擷取透鏡組,各表格的定義係與本實施例相同,故在以下實施例中不再加以贅述。
Please refer to Table 2 below, which is the aspheric coefficient of each surface of each lens of the first embodiment of the present invention. Among them, K is the conical coefficient in the aspheric curve equation, and A2 to A14 represent the 2nd to 14th order aspheric coefficients of each surface. For example, the conical coefficient K of the
第一實施例中,所述第一透鏡101的焦距f1與第三透鏡103的焦距f3之關係式為f3/f1=2.35。
In the first embodiment, the relationship between the focal length f1 of the
第一實施例中,所述第四透鏡104之像側面104b至第五透鏡105之物側面105a在光軸上之距離AT45與整體光學影像擷取透鏡組100之有效焦距EFL的關係式為AT45/EFL=0.96。
In the first embodiment, the relationship between the distance AT45 from the
第一實施例中,所述第二透鏡102的焦距f2與第三透鏡103的焦距f3之關係式為f3/f2=3.08。
In the first embodiment, the relationship between the focal length f2 of the
第一實施例中,所述第六透鏡106之像側面106b至第七透鏡107之物側面107a在光軸上之距離AT67,與第七透鏡107物側面的曲率半徑R13之間的關係式為AT67/R13=0.28。
In the first embodiment, the relationship between the distance AT67 from the
第一實施例中,所述第四透鏡104的焦距f4與整體光學影像擷取透鏡組100之有效焦距EFL的關係式為f4/EFL=2.53。
In the first embodiment, the relationship between the focal length f4 of the
第一實施例中,所述第五透鏡105及第六透鏡106所構成之膠合透鏡的組合焦距f56與整體光學影像擷取透鏡組100之有效焦距EFL的關係式為f56/EFL=6.96。
In the first embodiment, the relationship between the combined focal length f56 of the cemented lens formed by the
第一實施例中,所述第五透鏡105像側面105b的曲率半徑R10與整體光學影像擷取透鏡組100之有效焦距EFL的關係式為R10/EFL=-1.23。
In the first embodiment, the relationship between the radius of curvature R10 of the
第一實施例中,所述光學影像擷取透鏡組100之光圈ST至成像面110在光軸上之距離SL,與第一透鏡101物側面101a至光學影像擷取透鏡組100之成像面110在光軸上之距離TTL,二者間之關係式為SL/TTL=0.53。
In the first embodiment, the distance SL from the aperture ST of the optical image capturing
第一實施例中,所述第一透鏡101物側面101a的曲率半徑R1與像側面101b的曲率半徑R2之關係式為R1/R2=2.35。
In the first embodiment, the relationship between the radius of curvature R1 of the
第一實施例中,所述第一透鏡101物側面101a之曲率半徑R1,第二透鏡102像側面102b之曲率半徑為R4,與所述光學影像擷取透鏡組100之有效焦距為EFL之間的關係式EFL/R1+EFL/R4=1.06。
In the first embodiment, the radius of curvature R1 of the
第一實施例中,所述第一透鏡101至第七透鏡107在光軸上之厚度總和ΣCT,與第一透鏡101物側面101a至第七透鏡107像側面107b在光軸上之距離Dr1r14,二者間之關係式為ΣCT/Dr1r14=0.52。
In the first embodiment, the total thickness ΣCT of the
第一實施例中,所述第一透鏡101物側面101a至光學影像擷取透鏡組100之成像面110在光軸上之距離TTL,與所述光學影像擷取透鏡組100在成像面110上之最大像高ImgH間之關係式為TTL/ImgH=6.07。
In the first embodiment, the distance TTL from the
第一實施例中,所述第五透鏡105與第六透鏡106之色散係數分別為Vd5=51.1,Vd6=17.5。
In the first embodiment, the dispersion coefficients of the
第一實施例中,所述第四透鏡104之色散係數為Vd4=28.3。
In the first embodiment, the dispersion coefficient of the
第一實施例中,所述光學影像擷取透鏡組100之第一透鏡101、第二透鏡102、第四透鏡104、第五透鏡105及第六透鏡106的折射率皆大於1.7。
In the first embodiment, the refractive indexes of the
由上述關係式的數值可知,第一實施例之光學影像擷取透鏡組100滿足關係式(1)至(14)的要求,且滿足包含至少二片折射率大於等於1.7之透鏡的條件。
It can be seen from the values of the above relational expressions that the optical image capturing
參見圖1B,圖中由左至右分別為光學影像擷取透鏡組100之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.03mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;而畸變像差可以控制在10%以內。如圖1B所示,本實施例之光學影像擷取透鏡組100已良好地修正了各項像差,符合光學系統的成像品質要求。
1B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第二實施例Second embodiment
參見圖2A及圖2B,圖2A為本發明第二實施例之光學影像擷取透鏡組之示意圖。圖2B由左至右依序為本發明第二實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 2A and 2B, FIG. 2A is a schematic diagram of an optical image capturing lens assembly according to a second embodiment of the present invention. Fig. 2B shows the longitudinal spherical aberration (Longitudinal Spherical Aberration), the astigmatism/Field Curvature (Astigmatism/Field Curvature) and the distortion aberration (Distortion) of the second embodiment of the present invention in order from left to right.
如圖2A所示,第二實施例之光學影像擷取透鏡組200由物側至像側依序包含第一透鏡201、第二透鏡202、第三透鏡203、第四透鏡204、光圈ST、第五透鏡205、第六透鏡206及第七透鏡207。此光學影像擷取透鏡組200更可包含濾光元件208、保護玻璃209及成像面210。在成像面210上更可設置一影像感測元件220,以構成一成像裝置(未另標號)。
As shown in FIG. 2A, the optical image capturing
第一透鏡201具有負屈折力,其物側面201a為凸面、像側面201b為凹面,且其物側面201a及像側面201b皆為球面。第一透鏡201之材質為玻璃。
The
第二透鏡202具有負屈折力,其物側面202a為凸面、像側面202b為凹面,且其物側面202a及像側面202b皆為球面。第二透鏡202之材質為玻璃。
The
第三透鏡203具有負屈折力,其物側面203a為凹面、像側面203b為凸面,且物側面203a及像側面203b皆為非球面。第三透鏡203之材質為塑膠。
The third lens 203 has a negative refractive power, the
第四透鏡204具有正屈折力,其物側面204a為凸面,其像側面204b為凸面,且其物側面204a及像側面204b皆為球面。第四透鏡204之材質為玻璃。
The fourth lens 204 has a positive refractive power, its
第五透鏡205具有正屈折力,其物側面205a為凸面、像側面205b為凸面,且其物側面205a及像側面205b皆為球面。第五透鏡205之材質為玻璃。
The
第六透鏡206具有負屈折力,其物側面206a為凹面,其像側面206b為凸面,且其物側面206a及像側面206b皆為球面。第六透鏡206之材質為玻璃。其中,第五透鏡205之像側面205b與第六透鏡206之物側面206a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡207具有正屈折力,其物側面207a為凸面、像側面207b為凹面,且其物側面207a及像側面207b皆為非球面。第七透鏡207之材質為塑膠。
The
濾光元件208設置於第七透鏡207與成像面210之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件208之二表面208a、208b皆為平面,其材質為玻璃。
The
保護玻璃209設置於影像感測元件220之上,其二表面209a、209b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)220例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。
The
第二實施例之光學影像擷取透鏡組200之詳細光學數據及透鏡表面之非球面係數分別列於表三及表四。在第二實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficients of the lens surface of the optical image capturing
在第二實施例中,光學影像擷取透鏡組200之各關係式的數值列於表五。由表五可知,第二實施例之光學影像擷取透鏡組200滿足關係式(1)
至(14)的要求,且由表三可知光學影像擷取透鏡組200滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the second embodiment, the numerical values of the relational expressions of the optical image capturing
參見圖2B,圖中由左至右分別為光學影像擷取透鏡組200之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.02mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;而畸變像差可以控制在2%以內。如圖2B所示,本實施例之光學影像擷取透鏡組200已良好地修正了各項像差,符合光學系統的成像品質要求。
2B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第三實施例The third embodiment
參見圖3A及圖3B,圖3A為本發明第三實施例之光學影像擷取透鏡組之示意圖。圖3B由左至右依序為本發明第三實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 3A and 3B, FIG. 3A is a schematic diagram of an optical image capturing lens group according to a third embodiment of the present invention. FIG. 3B shows the longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), the astigmatism field curvature (Astigmatism/Field Curvature) and the distortion aberration diagram (Distortion) of the third embodiment of the present invention in order from left to right.
如圖3A所示,第三實施例之光學影像擷取透鏡組300由物側至像側依序包含第一透鏡301、第二透鏡302、第三透鏡303、第四透鏡304、光圈ST、第五透鏡305、第六透鏡306及第七透鏡307。此光學影像擷取透鏡組300更可包含濾光元件308、保護玻璃309及成像面310。在成像面310上更可設置一影像感測元件320,以構成一成像裝置(未另標號)。
As shown in FIG. 3A, the optical image capturing
第一透鏡301具有負屈折力,其物側面301a為凸面、像側面301b為凹面,且其物側面301a及像側面301b皆為球面。第一透鏡301之材質為玻璃。
The
第二透鏡302具有負屈折力,其物側面302a為凸面、像側面302b為凹面,且其物側面302a及像側面302b皆為球面。第二透鏡302之材質為玻璃。
The
第三透鏡303具有負屈折力,其物側面303a為凹面、像側面303b為凸面,且物側面303a及像側面303b皆為非球面。第三透鏡303之材質為塑膠。
The
第四透鏡304具有正屈折力,其物側面304a為凸面,其像側面304b為凸面,且其物側面304a及像側面304b皆為球面。第四透鏡304之材質為玻璃。
The
第五透鏡305具有正屈折力,其物側面305a為凸面、像側面305b為凸面,且其物側面305a及像側面305b皆為球面。第五透鏡305之材質為玻璃。
The
第六透鏡306具有負屈折力,其物側面306a為凹面,其像側面306b為凸面,且其物側面306a及像側面306b皆為球面。第六透鏡306之材質為玻璃。
其中,第五透鏡305之像側面305b與第六透鏡306之物側面306a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡307具有正屈折力,其物側面307a為凸面、像側面307b為凹面,且其物側面307a及像側面307b皆為非球面。第七透鏡307之材質為塑膠。
The
濾光元件308設置於第七透鏡307與成像面310之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件308之二表面308a、308b皆為平面,其材質為玻璃。
The
保護玻璃309設置於影像感測元件320之上,其二表面309a、309b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)320例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。
The
第三實施例之光學影像擷取透鏡組300之詳細光學數據及透鏡表面之非球面係數分別列於表六及表七。在第三實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficient of the lens surface of the optical image capturing
在第三實施例中,光學影像擷取透鏡組300之各關係式的數值列於表八。由表八可知,第三實施例之光學影像擷取透鏡組300滿足關係式(1)至(14)的要求,且由表六可知光學影像擷取透鏡組300滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the third embodiment, the numerical values of the relational expressions of the optical image capturing
參見圖3B,圖中由左至右分別為光學影像擷取透鏡組300之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.02mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;而畸變像差可以控制在2%以內。如圖3B所示,本實施例之光學影像擷取透鏡組300已良好地修正了各項像差,符合光學系統的成像品質要求。
Referring to FIG. 3B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第四實施例Fourth embodiment
參見圖4A及圖4B,圖4A為本發明第四實施例之光學影像擷取透鏡組之示意圖。圖4B由左至右依序為本發明第四實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 4A and 4B, FIG. 4A is a schematic diagram of an optical image capturing lens group according to a fourth embodiment of the present invention. Fig. 4B shows the longitudinal spherical aberration (Longitudinal Spherical Aberration), the astigmatism/Field Curvature (Astigmatism/Field Curvature) and the distortion aberration (Distortion) of the fourth embodiment of the present invention in order from left to right.
如圖4A所示,第四實施例之光學影像擷取透鏡組400由物側至像側依序包含第一透鏡401、第二透鏡402、第三透鏡403、第四透鏡404、光圈ST、第五透鏡405、第六透鏡406及第七透鏡407。此光學影像擷取透鏡組400更可包含濾光元件408、保護玻璃409及成像面410。在成像面410上更可設置一影像感測元件420,以構成一成像裝置(未另標號)。
As shown in FIG. 4A, the optical image capturing
第一透鏡401具有負屈折力,其物側面401a為凸面、像側面401b為凹面,且其物側面401a及像側面401b皆為球面。第一透鏡401之材質為玻璃。
The
第二透鏡402具有負屈折力,其物側面402a為凸面、像側面402b為凹面,且其物側面402a及像側面402b皆為球面。第二透鏡402之材質為玻璃。
The
第三透鏡403具有負屈折力,其物側面403a為凹面、像側面403b為凸面,且物側面403a及像側面403b皆為非球面。第三透鏡403之材質為玻璃。
The
第四透鏡404具有正屈折力,其物側面404a為凸面,其像側面404b為凸面,且其物側面404a及像側面404b皆為球面。第四透鏡404之材質為玻璃。
The
第五透鏡405具有正屈折力,其物側面405a為凸面、像側面405b為凸面,且其物側面405a及像側面405b皆為球面。第五透鏡405之材質為玻璃。
The
第六透鏡406具有負屈折力,其物側面406a為凹面,其像側面406b為凸面,且其物側面406a及像側面406b皆為球面。第六透鏡406之材質為玻璃。其中,第五透鏡405之像側面405b與第六透鏡406之物側面406a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡407具有正屈折力,其物側面407a為凸面、像側面407b為凹面,且其物側面407a及像側面407b皆為非球面。第七透鏡407之材質為塑膠。
The
濾光元件408設置於第七透鏡407與成像面410之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件408之二表面408a、408b皆為平面,其材質為玻璃。
The
保護玻璃409設置於影像感測元件420之上,其二表面409a、409b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)420例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。
The
第四實施例之光學影像擷取透鏡組400之詳細光學數據及透鏡表面之非球面係數分別列於表九及表十。在第四實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficients of the lens surface of the optical image capturing
在第四實施例中,光學影像擷取透鏡組400之各關係式的數值列於表十一。由表十一可知,第四實施例之光學影像擷取透鏡組400滿足關係式(1)至(14)的要求,且由表九可知光學影像擷取透鏡組400滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the fourth embodiment, the values of the relational expressions of the optical image capturing
參見圖4B,圖中由左至右分別為光學影像擷取透鏡組400之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.04mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;而畸變像差可以控
制在5%以內。如圖4B所示,本實施例之光學影像擷取透鏡組400已良好地修正了各項像差,符合光學系統的成像品質要求。
Referring to FIG. 4B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第五實施例Fifth embodiment
參見圖5A及圖5B,圖5A為本發明第五實施例之光學影像擷取透鏡組之示意圖。圖5B由左至右依序為本發明第五實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 5A and 5B, FIG. 5A is a schematic diagram of an optical image capturing lens group according to a fifth embodiment of the present invention. Fig. 5B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism/Field Curvature diagram (Astigmatism/Field Curvature) and a distortion aberration diagram (Distortion) of the fifth embodiment of the present invention in order from left to right.
如圖5A所示,第五實施例之光學影像擷取透鏡組500由物側至像側依序包含第一透鏡501、第二透鏡502、第三透鏡503、第四透鏡504、光圈ST、第五透鏡505、第六透鏡506及第七透鏡507。此光學影像擷取透鏡組500更可包含濾光元件508、保護玻璃509及成像面510。在成像面510上更可設置一影像感測元件520,以構成一成像裝置(未另標號)。
As shown in FIG. 5A, the optical image capturing
第一透鏡501具有負屈折力,其物側面501a為凸面、像側面501b為凹面,且其物側面501a及像側面501b皆為球面。第一透鏡501之材質為玻璃。
The
第二透鏡502具有負屈折力,其物側面502a為凸面、像側面502b為凹面,且其物側面502a及像側面502b皆為球面。第二透鏡502之材質為玻璃。
The
第三透鏡503具有負屈折力,其物側面503a為凹面、像側面503b為凸面,且物側面503a及像側面503b皆為非球面。第三透鏡503之材質為塑膠。
The
第四透鏡504具有正屈折力,其物側面504a為凸面,其像側面504b為凸面,且其物側面504a及像側面504b皆為球面。第四透鏡504之材質為玻璃。
The
第五透鏡505具有正屈折力,其物側面505a為凸面、像側面505b為凸面,且其物側面505a及像側面505b皆為球面。第五透鏡505之材質為玻璃。
The
第六透鏡506具有負屈折力,其物側面506a為凹面,其像側面506b為凸面,且其物側面506a及像側面506b皆為球面。第六透鏡506之材質為玻璃。
其中,第五透鏡505之像側面505b與第六透鏡506之物側面506a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡507具有正屈折力,其物側面507a為凸面、像側面507b為凹面,且其物側面507a及像側面507b皆為非球面。第七透鏡507之材質為玻璃。
The
濾光元件508設置於第七透鏡507與成像面510之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件508之二表面508a、508b皆為平面,其材質為玻璃。
The
保護玻璃509設置於影像感測元件520之上,其二表面509a、509b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)520例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。 The image sensor (Image Sensor) 520 is, for example, a charge-coupled device (CCD) Image Sensor or a complementary metal oxide semiconductor sensor (CMOS Image Sensor).
第五實施例之光學影像擷取透鏡組500之詳細光學數據及透鏡表面之非球面係數分別列於表十二及表十三。在第五實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficient of the lens surface of the optical image capturing
在第五實施例中,光學影像擷取透鏡組500之各關係式的數值列於表十四。由表十四可知,第五實施例之光學影像擷取透鏡組500滿足關係式(1)至(14)的要求,且由表九可知光學影像擷取透鏡組500滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the fifth embodiment, the numerical values of the relational expressions of the optical image capturing
參見圖5B,圖中由左至右分別為光學影像擷取透鏡組500之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.03mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.01mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;而畸變像差可以控制在16%以內。如圖5B所示,本實施例之光學影像擷取透鏡組500已良好地修正了各項像差,符合光學系統的成像品質要求。
Referring to FIG. 5B, from left to right, the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第六實施例Sixth embodiment
參見圖6A及圖6B,圖6A為本發明第六實施例之光學影像擷取透鏡組之示意圖。圖6B由左至右依序為本發明第六實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 6A and 6B, FIG. 6A is a schematic diagram of an optical image capturing lens group according to a sixth embodiment of the present invention. FIG. 6B shows the longitudinal spherical aberration (Longitudinal Spherical Aberration), the astigmatism/Field Curvature (Astigmatism/Field Curvature) and the distortion aberration (Distortion) of the sixth embodiment of the present invention in order from left to right.
如圖6A所示,第六實施例之光學影像擷取透鏡組600由物側至像側依序包含第一透鏡601、第二透鏡602、第三透鏡603、第四透鏡604、光圈ST、第五透鏡605、第六透鏡606及第七透鏡607。此光學影像擷取透鏡組600更可包含濾光元件608、保護玻璃609及成像面610。在成像面610上更可設置一影像感測元件620,以構成一成像裝置(未另標號)。
As shown in FIG. 6A, the optical image capturing
第一透鏡601具有負屈折力,其物側面601a為凸面、像側面601b為凹面,且其物側面601a及像側面601b皆為球面。第一透鏡601之材質為玻璃。
The
第二透鏡602具有負屈折力,其物側面602a為凸面、像側面602b為凹面,且其物側面602a及像側面602b皆為球面。第二透鏡602之材質為玻璃。
The
第三透鏡603具有負屈折力,其物側面603a為凹面、像側面603b為凸面,且物側面603a及像側面603b皆為非球面。第三透鏡603之材質為玻璃。
The
第四透鏡604具有正屈折力,其物側面604a為凸面,其像側面604b為凹面,且其物側面604a及像側面604b皆為球面。第四透鏡604之材質為玻璃。
The
第五透鏡605具有正屈折力,其物側面605a為凸面、像側面605b為凸面,且其物側面605a及像側面605b皆為球面。第五透鏡605之材質為玻璃。
The
第六透鏡606具有負屈折力,其物側面606a為凹面,其像側面606b為凸面,且其物側面606a及像側面606b皆為球面。第六透鏡606之材質為玻璃。其中,第五透鏡605之像側面605b與第六透鏡606之物側面606a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡607具有正屈折力,其物側面607a為凸面、像側面607b為凹面,且其物側面607a及像側面607b皆為非球面。第七透鏡607之材質為玻璃。
The
濾光元件608設置於第七透鏡607與成像面610之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件608之二表面608a、608b皆為平面,其材質為玻璃。
The
保護玻璃609設置於影像感測元件620之上,其二表面609a、609b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)620例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。
The
第六實施例之光學影像擷取透鏡組600之詳細光學數據及透鏡表面之非球面係數分別列於表十五及表十六。在第六實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficient of the lens surface of the optical image capturing
在第六實施例中,光學影像擷取透鏡組600之各關係式的數值列於表十七。由表十七可知,第六實施例之光學影像擷取透鏡組600滿足關係式(1)至(14)的要求,且由表十五可知光學影像擷取透鏡組600滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the sixth embodiment, the values of the relational expressions of the optical image capturing
參見圖6B,圖中由左至右分別為光學影像擷取透鏡組600之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.05mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.04mm以內;而畸變像差可以控
制在10%以內。如圖6B所示,本實施例之光學影像擷取透鏡組600已良好地修正了各項像差,符合光學系統的成像品質要求。
6B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第七實施例Seventh embodiment
參見圖7A及圖7B,圖7A為本發明第七實施例之光學影像擷取透鏡組之示意圖。圖7B由左至右依序為本發明第七實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 7A and 7B, FIG. 7A is a schematic diagram of an optical image capturing lens group according to a seventh embodiment of the present invention. FIG. 7B shows the longitudinal spherical aberration (Longitudinal Spherical Aberration), the astigmatism/Field Curvature (Astigmatism/Field Curvature) and the distortion aberration (Distortion) of the seventh embodiment of the present invention in order from left to right.
如圖7A所示,第七實施例之光學影像擷取透鏡組700由物側至像側依序包含第一透鏡701、第二透鏡702、第三透鏡703、第四透鏡704、光圈ST、第五透鏡705、第六透鏡706及第七透鏡707。此光學影像擷取透鏡組700更可包含濾光元件708、保護玻璃709及成像面710。在成像面710上更可設置一影像感測元件720,以構成一成像裝置(未另標號)。
As shown in FIG. 7A, the optical image capturing
第一透鏡701具有負屈折力,其物側面701a為凸面、像側面701b為凹面,且其物側面701a及像側面701b皆為球面。第一透鏡701之材質為玻璃。
The
第二透鏡702具有負屈折力,其物側面702a為凸面、像側面702b為凹面,且其物側面702a及像側面702b皆為球面。第二透鏡702之材質為玻璃。
The
第三透鏡703具有負屈折力,其物側面703a為凹面、像側面703b為凸面,且物側面703a及像側面703b皆為非球面。第三透鏡703之材質為塑膠。
The
第四透鏡704具有正屈折力,其物側面704a為凸面,其像側面704b為凸面,且其物側面704a及像側面704b皆為球面。第四透鏡704之材質為玻璃。
The
第五透鏡705具有正屈折力,其物側面705a為凸面、像側面705b為凸面,且其物側面705a及像側面705b皆為球面。第五透鏡705之材質為玻璃。
The
第六透鏡706具有負屈折力,其物側面706a為凹面,其像側面706b為凸面,且其物側面706a及像側面706b皆為球面。第六透鏡706之材質為玻璃。其中,第五透鏡705之像側面705b與第六透鏡706之物側面706a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡707具有正屈折力,其物側面707a為凸面、像側面707b為凹面,且其物側面707a及像側面707b皆為非球面。第七透鏡707之材質為玻璃。
The
濾光元件708設置於第七透鏡707與成像面710之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件708之二表面708a、708b皆為平面,其材質為玻璃。
The
保護玻璃709設置於影像感測元件720之上,其二表面709a、709b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)720例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。
The
第七實施例之光學影像擷取透鏡組700之詳細光學數據及透鏡表面之非球面係數分別列於表十八及表十九。在第七實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficient of the lens surface of the optical image capturing
在第七實施例中,光學影像擷取透鏡組700之各關係式的數值列於表二十。由表二十可知,第七實施例之光學影像擷取透鏡組700滿足關係式(1)至(14)的要求,且由表十八可知光學影像擷取透鏡組700滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the seventh embodiment, the values of the relational expressions of the optical image capturing
參見圖7B,圖中由左至右分別為光學影像擷取透鏡組700之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.03mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;而畸變像差可以控制在3%以內。如圖7B所示,本實施例之光學影像擷取透鏡組700已良好地修正了各項像差,符合光學系統的成像品質要求。
Referring to FIG. 7B, from left to right, the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第八實施例Eighth embodiment
參見圖8A及圖8B,圖8A為本發明第八實施例之光學影像擷取透鏡組之示意圖。圖8B由左至右依序為本發明第八實施例之縱向球差圖(Longitudinal Spherical Aberration)、像散場曲像差圖(Astigmatism/Field Curvature)及畸變像差圖(Distortion)。 Referring to FIGS. 8A and 8B, FIG. 8A is a schematic diagram of an optical image capturing lens group according to an eighth embodiment of the present invention. FIG. 8B is a longitudinal spherical aberration diagram (Longitudinal Spherical Aberration), an astigmatism field curvature diagram (Astigmatism/Field Curvature), and a distortion aberration diagram (Distortion) of the eighth embodiment of the present invention in order from left to right.
如圖8A所示,第八實施例之光學影像擷取透鏡組800由物側至像側依序包含第一透鏡801、第二透鏡802、第三透鏡803、第四透鏡804、光圈ST、第五透鏡805、第六透鏡806及第七透鏡807。此光學影像擷取透鏡組800更可包含濾光元件808、保護玻璃809及成像面810。在成像面810上更可設置一影像感測元件820,以構成一成像裝置(未另標號)。
As shown in FIG. 8A, the optical image capturing
第一透鏡801具有負屈折力,其物側面801a為凸面、像側面801b為凹面,且其物側面801a及像側面801b皆為球面。第一透鏡801之材質為玻璃。
The
第二透鏡802具有負屈折力,其物側面802a為凸面、像側面802b為凹面,且其物側面802a及像側面802b皆為球面。第二透鏡802之材質為玻璃。
The
第三透鏡803具有負屈折力,其物側面803a為凹面、像側面803b為凸面,且物側面803a及像側面803b皆為非球面。第三透鏡803之材質為塑膠。
The
第四透鏡804具有正屈折力,其物側面804a為凸面,其像側面804b為凸面,且其物側面804a及像側面804b皆為球面。第四透鏡804之材質為玻璃。
The
第五透鏡805具有正屈折力,其物側面805a為凸面、像側面805b為凸面,且其物側面805a及像側面805b皆為球面。第五透鏡805之材質為玻璃。
The
第六透鏡806具有負屈折力,其物側面806a為凹面,其像側面806b為凸面,且其物側面806a及像側面806b皆為球面。第六透鏡806之材質為玻璃。其中,第五透鏡805之像側面805b與第六透鏡806之物側面806a具有相同的曲率半徑,並且彼此黏合形成一膠合透鏡。
The
第七透鏡807具有正屈折力,其物側面807a為凸面、像側面807b為凹面,且其物側面807a及像側面807b皆為非球面。第七透鏡807之材質為塑膠。
The
濾光元件808設置於第七透鏡807與成像面810之間,用以濾除特定波長區段的光線,例如是一紅外線濾除元件(IR Filter)。濾光元件808之二表面808a、808b皆為平面,其材質為玻璃。
The
保護玻璃809設置於影像感測元件820之上,其二表面809a、809b皆為平面,其材質為玻璃。
The
影像感測元件(Image Sensor)820例如是電荷耦合元件影像感測元件(Charge-Coupled Device(CCD)Image Sensor)或互補式金屬氧化半導體感測元件(CMOS Image Sensor)。 The image sensor (Image Sensor) 820 is, for example, a charge-coupled device (CCD) Image Sensor or a complementary metal oxide semiconductor sensor (CMOS Image Sensor).
第八實施例之光學影像擷取透鏡組800之詳細光學數據及透鏡表面之非球面係數分別列於表二十一及表二十二。在第八實施例中,非球面之曲線方程式表示如第一實施例的形式。
The detailed optical data and the aspheric coefficient of the lens surface of the optical image capturing
在第八實施例中,光學影像擷取透鏡組800之各關係式的數值列於表二十三。由表二十三可知,第八實施例之光學影像擷取透鏡組800滿足關係式(1)至(14)的要求,且由表二十一可知光學影像擷取透鏡組800滿足包含至少二片折射率大於等於1.7之透鏡的條件。
In the eighth embodiment, the values of the relational expressions of the optical image capturing
參見圖8B,圖中由左至右分別為光學影像擷取透鏡組800之縱向球差圖、像散場曲像差圖及畸變像差圖。由縱向球差圖可以看出,三種可見光
470nm、550nm及650nm波長在不同高度的離軸光線皆可集中於成像點附近,其成像點偏差可以控制在±0.03mm以內。由像散場曲像差圖(波長550nm)可以看出,弧矢方向的像差在整個視場範圍內的焦距變化量在±0.02mm以內;子午方向的像差在整個視場範圍內的焦距變化量在±0.03mm以內;而畸變像差可以控制在3%以內。如圖8B所示,本實施例之光學影像擷取透鏡組800已良好地修正了各項像差,符合光學系統的成像品質要求。
Referring to FIG. 8B, from left to right are the longitudinal spherical aberration diagram, the astigmatic field curvature aberration diagram, and the distortion aberration diagram of the optical image capturing
第九實施例Ninth embodiment
本發明第九實施例為一成像裝置,此成像裝置包含如前述第一至第八實施例之光學影像擷取透鏡組,及一影像感測元件。影像感測元件例如是電荷耦合元件(Charge-Coupled Device,CCD)或互補式金屬氧化半導體(Complementary Metal Oxide Semiconductor,CMOS)影像感測元件等。此成像裝置例如是車用攝影之相機模組、可攜式電子產品之相機模組,或監控攝影機之相機模組等。 The ninth embodiment of the present invention is an imaging device. The imaging device includes the optical image capturing lens group of the aforementioned first to eighth embodiments, and an image sensing element. The image sensor device is, for example, a charge-coupled device (CCD) or a complementary metal oxide semiconductor (CMOS) image sensor device. This imaging device is, for example, a camera module for car photography, a camera module for portable electronic products, or a camera module for surveillance cameras.
第十實施例Tenth embodiment
請參照圖9,圖中係繪示本發明第十實施例之電子裝置1000的示意圖。如圖所示,電子裝置1000包含一成像裝置1010。成像裝置1010例如是前述第九實施例之成像裝置,可以由本發明之光學影像擷取透鏡組及一影像感測元件所構成。此電子裝置1000例如是車用攝影裝置、監視攝影機或空拍攝影機等。
Please refer to FIG. 9, which is a schematic diagram of an
雖然本發明使用前述數個實施例加以說明,然而該些實施例並非用以限制本發明之範圍。對本發明所屬技術領域具有通常知識者而言,在不脫離本發明之精神與範圍內,仍可以參照本發明所揭露的實施例內容進行形式上 和細節上的多種變化。是故,此處需明白的是,本發明係以下列申請專利範圍所界定者為準,任何在申請專利範圍內或其等效的範圍內所作的各種變化,仍應落入本發明之申請專利範圍之內。 Although the present invention is described using the foregoing several embodiments, these embodiments are not intended to limit the scope of the present invention. For those with ordinary knowledge in the technical field to which the present invention belongs, without departing from the spirit and scope of the present invention, they can still refer to the contents of the embodiments disclosed in the present invention for formal analysis. And many changes in details. Therefore, it should be understood here that the present invention is subject to the scope of the following patent applications. Any changes made within the scope of the patent application or its equivalent scope shall still fall into the application of the present invention. Within the scope of the patent.
100:光學影像擷取透鏡組 100: Optical image capture lens group
101:第一透鏡 101: The first lens
102:第二透鏡 102: second lens
103:第三透鏡 103: third lens
104:第四透鏡 104: fourth lens
105:第五透鏡 105: Fifth lens
106:第六透鏡 106: sixth lens
107:第七透鏡 107: seventh lens
108:濾光元件 108: filter element
109:保護玻璃 109: Protective glass
110:成像面 110: imaging surface
101a:第一透鏡之物側面 101a: Object side of the first lens
101b:第一透鏡之像側面 101b: The side of the image of the first lens
102a:第二透鏡之物側面 102a: Object side of the second lens
102b:第二透鏡之像側面 102b: The side of the image of the second lens
103a:第三透鏡之物側面 103a: The object side of the third lens
103b:第三透鏡之像側面 103b: The image side of the third lens
104a:第四透鏡之物側面 104a: The object side of the fourth lens
104b:第四透鏡之像側面 104b: The side of the image of the fourth lens
105a:第五透鏡之物側面 105a: the object side of the fifth lens
105b:第五透鏡之像側面 105b: The side of the image of the fifth lens
106a:第六透鏡之物側面 106a: The object side of the sixth lens
106b:第六透鏡之像側面 106b: The side of the image of the sixth lens
107a:第七透鏡之物側面 107a: The object side of the seventh lens
107b:第七透鏡之像側面 107b: The image side of the seventh lens
108a、108b:濾光元件之二表面 108a, 108b: The second surface of the filter element
109a、109b:保護玻璃之二表面 109a, 109b: Protect the second surface of glass
120:影像感測元件 120: Image sensor
I:光軸 I: Optical axis
ST:光圈 ST: Aperture
Claims (17)
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190154991A1 (en) * | 2017-11-21 | 2019-05-23 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system |
TW201947273A (en) * | 2018-05-07 | 2019-12-16 | 佳凌科技股份有限公司 | Wide-angle lens assembly |
CN111367058A (en) * | 2018-12-25 | 2020-07-03 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190154991A1 (en) * | 2017-11-21 | 2019-05-23 | Samsung Electro-Mechanics Co., Ltd. | Optical imaging system |
TW201947273A (en) * | 2018-05-07 | 2019-12-16 | 佳凌科技股份有限公司 | Wide-angle lens assembly |
CN111367058A (en) * | 2018-12-25 | 2020-07-03 | 宁波舜宇车载光学技术有限公司 | Optical lens and imaging apparatus |
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