TWM398125U - Three-piece pickup lens - Google Patents
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- TWM398125U TWM398125U TW99212536U TW99212536U TWM398125U TW M398125 U TWM398125 U TW M398125U TW 99212536 U TW99212536 U TW 99212536U TW 99212536 U TW99212536 U TW 99212536U TW M398125 U TWM398125 U TW M398125U
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M3.98125 申請補充修正曰期:99年ι〇月21曰 五、新型說明: 【新型所屬之技術領域】 本創作有關一種三鏡片光學取像鏡頭,尤指一種針對行動電 話或使用CCD (電荷藕合裝置)或CMOS (互補型金屬氧化物半 導體)等影像感測器的光學取像鏡頭。 【先前技術】 隨著科技的進步,電子產品不斷地朝向輕薄短小以及多功能 的方向發展,而電子產品中如:數彳立相機(DigitM JStiU Camera)、電 月&相機(PC camera}、網路相機(^⑽叫..、行多電話(手機) 等已具備取像裝置(鏡頭)之外,甚至個人數位輔助器(pDA)等裝 置也有加上取像裝置(鏡頭)的需求;而為了攜帶方便及符合人 性化的需求,取像裝置不僅需要具有良好的成像品質,同時也需 要有較小的體積與較低的成本,始能有效提昇該取像裝置之應用 性,尤其是應用於行動電話上,上述需要或條件更為重要。 而由於傳統之球面研磨玻璃透鏡的材質選擇性較多,且對於 修正色差較為有利’已廣為業界所使用,但球面研磨玻璃透鏡應 用在焦數(Fnumber)較小以及視場角大的情況時, 球差及像散等像差的修正仍較困難;而為了改善上述傳統之球面 研磨玻璃透鏡的缺點,目前之取像裝置已有使用非球面塑膠透鏡 或使用非球面模造玻璃透鏡,以獲得較佳的成像品質,如美國發 明專利: US2007/0091457、US 6,515,809、US 7,262,925、US 2007/0195432、US2005/0128334,或如日本專利 jp 2007-121820、 099212536 0993376511-〇 5 M398125 申請補充修正日期:99年10月2〗曰 JP2005-352317 ' JP 2004-163786 ' JP 2007-094113 > JP 2005-338234 JP 2007-047513、JP 2006-098976 等’多件包含三片式透鏡(lens elements)之光學取像鏡頭結構設計;而上述多件發明專利之結構 設計之間的差異處或技術特徵則決定於以下各種因素的變化或組 合而已:各件專利中該三透鏡之間對應配合之形狀設計不同,如 第一、二、三等三透鏡皆為新月型(meniscus shape)透鏡,或第 一、一透鏡為新月型而苐二透鏡為平凹型(plano-concave shape) 或平凸型(plano-convex shape);及/或各件專利中該三透鏡之間 對應配合之凸面/凹面方向不同,如第一/二/三等三透鏡之凸面/凹 及/或各件專利中該三透鏡M3.98125 Application for Supplementary Amendment: 99 years ι〇月21曰5, new description: [New technical field] This creation is related to a three-lens optical imaging lens, especially for mobile phones or using CCD (charge) An optical pickup lens of an image sensor such as a splicing device or a CMOS (Complementary Metal Oxide Semiconductor). [Prior Art] With the advancement of technology, electronic products are constantly moving toward light, short, and versatile, and electronic products such as DigitM JStiU Camera, Power Moon & Camera (PC camera), Internet cameras (^(10), .., multi-telephone (mobile), etc. already have an imaging device (lens), and even a personal digital assistant (pDA) device has a need for an imaging device (lens); In order to be portable and ergonomic, the image capturing device not only needs to have good image quality, but also needs to have a small volume and a low cost, and can effectively improve the applicability of the image capturing device, especially Applied to mobile phones, the above needs or conditions are more important. Because the traditional spherical grinding glass lens has more material selectivity and is more favorable for correcting chromatic aberrations, it has been widely used in the industry, but spherical grinding glass lens is used in When the focal length (Fnumber) is small and the angle of view is large, correction of aberrations such as spherical aberration and astigmatism is still difficult; and in order to improve the above-mentioned conventional spherical grinding glass Disadvantages of lenses, current imaging devices have used aspherical plastic lenses or aspherical molded glass lenses for better imaging quality, such as US invention patents: US2007/0091457, US 6,515,809, US 7,262,925, US 2007/ 0195432, US2005/0128334, or as Japanese patents jp 2007-121820, 099212536 0993376511-〇5 M398125 Application Supplementary Amendment Date: October 2, 1999 曰 JP2005-352317 ' JP 2004-163786 ' JP 2007-094113 > JP 2005 -338234 JP 2007-047513, JP 2006-098976, etc. 'Multiple pieces of optical imaging lens structure including three-piece lens elements; and the difference or technical feature between the structural designs of the above multiple invention patents It is determined by the following changes or combinations of various factors: in each patent, the shape of the corresponding matching between the three lenses is different, for example, the first, second, third, etc. three lenses are all meniscus shape lenses, or One lens is a crescent moon type and the second lens is a plano-concave shape or a plano-convex shape; and/or a pair of lenses between the three lenses The convex/concave direction should be matched, such as the convex/concave of the first/second/three-three-lens and/or the three lenses in each patent.
如曰本特Ruan Bent
面可安排在物側/像側等多種變化組合; 之間對應配合之屈光度(refractive 許第3717488號專利等。 , 由上可知,就三透鏡之光學取像鏡頭的設計而論,其習知技 術在設計光學取像鏡頭技術領域,係為各種不同光學目的之應 用,而產生不同的變化或組合,因其使用透鏡形狀、組合、作用The surface can be arranged in a variety of combinations of the object side/image side; the refracting power of the corresponding fit (refractive Xu 3717488 patent, etc., from the above, in terms of the design of the optical lens of the three lens, it is known The technology is used in the field of designing optical imaging lenses for a variety of different optical purposes, resulting in different variations or combinations due to the use of lens shapes, combinations, and functions.
或功效不同,即可視為具有新穎性(n〇velty)或進步性(inventive step)。 近年為應用於小型相機、照像手機、PDA等產品,其取像鏡 頭要求小型化、焦距短'像差調整良好,在各種小型化的三透鏡 取像鏡頭設計中,以正屈光度之第一透鏡'負屈光度之第二透鏡、 具有反曲點變化正負屈光度的第三鏡片(稱為M型鏡片、M shaped lens) ’最可能達到小型化之需求。 對於不同的成像方法:在第-片為正屈光度、第二片為負屈 光度、第二片為正屈光度M型鏡片,如歐洲專利Epi83〇2i〇、曰 本專利公開號JP2〇〇8-〗39853、ΙΡ2006-Π8328、美國專利 099212536 6 0993376511-0 M398125 申請補充修正曰期:99年10月21曰 US7,397,613、US7,486,328、US7,423,817、US7,468,847、 US7,515,358、美國專利公開號 US2007/0195426、 US2007/0217034、US 2007/0229986、US 2008/0239510、台灣專利 TWM343167、台灣專利公開號TW200639432、中國專利公開號 CN1670560、CN1873460等;在第一片為正屈光度、第二片為負 屈光度、第三片為負屈光度Μ型鏡片,如歐洲專利EP1840618、 ΕΡ1942363、美國專利 US7,460,315、US7,460,314、US7,450,323、 US7,511,899、美國專利公開號 US2007/0229987、Or different in efficacy, it can be considered as novelty (n〇velty) or inactive step. In recent years, it has been applied to small cameras, photo phones, PDAs, etc., and its image-taking lens requires miniaturization and short focal length. 'Aberration adjustment is good. In the miniaturized three-lens image-taking lens design, it is the first in positive diopter. The second lens of the lens 'negative diopter, the third lens (referred to as M-shaped lens, M shaped lens) with the inflection point change positive and negative diopter' is most likely to meet the demand for miniaturization. For different imaging methods: the positive diopter in the first film, the negative diopter in the second film, and the positive diopter M lens in the second film, such as the European patent Epi83〇2i〇, 曰本专利 Publication No. JP2〇〇8- 39853, ΙΡ2006-Π8328, US Patent 099212536 6 0993376511-0 M398125 Application for Supplementary Amendments: US Patent No. 7,397,613, US 7,486 US2007/0195426, US2007/0217034, US 2007/0229986, US 2008/0239510, Taiwan Patent TWM343167, Taiwan Patent Publication No. TW200639432, Chinese Patent Publication No. CN1670560, CN1873460, etc.; in the first piece is positive diopter, the second piece is negative The diopter, the third is a negative diopter Μ-type lens, such as the European patents EP1840618, ΕΡ1942363, US Patent 7,460,315, US 7,460,314, US 7,450, 323, US 7,511, 899, US Patent Publication No. US 2007/0229987,
US2008/0225401、US2008/0266679、US2008/0225401、 US2007/0195426、曰本專利JP3816093、曰本專利公開號 JP2008-276200、JP2008-233222、11>2_备7620〇、JP2007-010773、 WIPO專利W〇2〇〇7〇3998〇、中國專利公開號CN1945372等。 然而,在應用於光學取像鏡頭上,尤其使用於小型(薄形)裝置 如行動電話的轉铜、稱域轉醜等,綱直徑小(鏡片 有效半徑小)、取像鏡頭全紐(鏡4總長短)、影像_器盘鏡片 距脑(短後焦)及具有良好像差修正的光學取像鏡頭為使用者迫 切的需求。先前技術在解決此問題上,使用不同的透鏡組成、使 用不同鏡片形狀或使用不同相關光學做等 的目的與簡便設計、製造上,本創作握更為小型(_) 外,比㈣Μ參y 齡出第—透鏡及第三透鏡設 计白_ M型鏡片,可有效縮短後焦距長度及增廣視角,以運 用於小型薄型的行動電話或光學系 ㈣角以運 099212536 0993376511-0 M398125 申請補充修正曰期:99年10月21曰 【新型内容】 為解決上述問題,本創作主要目的乃在於提供一種三鏡片光 學取像綱,沿著絲由-物淑—像_顺序包含:一孔徑 光闌;-第-透鏡,為-新月型透鏡,具有正屈光度;一第二透 叙’ ^近光赠可為正屈歧或貞屈歧,該第二透鏡之物側面 及該^二魏之像側面各具有至少―反曲點,位於該第二透鏡中 二向从緣處以及—第三透鏡於近綠處為正屈狀,該第三透 二碘::及该第三透鏡之像側面各具有至少-反曲點,位於該 第二透鏡中心向邊緣處。 本創作之二鏡片光學取像鏡雙曾觸綱。消⑺式條US2008/0225401, US2008/0266679, US2008/0225401, US2007/0195426, 曰Patent JP3890603, 专利本专利 Publication No. JP2008-276200, JP2008-233222, 11> 2_7620〇, JP2007-010773, WIPO Patent W〇 2〇〇7〇3998〇, Chinese Patent Publication No. CN1945372, etc. However, it is applied to optical imaging lenses, especially for small (thin) devices such as mobile phones, such as copper transfer, ugly, etc., small diameter (low effective radius of lens), image lens (new lens) 4 total length and length), image _ disk lens distance from the brain (short back focus) and optical imaging lens with good aberration correction is an urgent need of users. In the prior art, in order to solve this problem, the purpose of using different lens compositions, using different lens shapes or using different related optics, and simple design and manufacture, the creation grip is smaller (_) than the (four) Μ y y The first lens and the third lens are designed with white _ M-type lenses, which can effectively shorten the back focal length and widen the viewing angle, and can be applied to small and thin mobile phones or optical systems (4) corners to apply for additional corrections. 099212536 0993376511-0 M398125曰期: October 21, 1999 [New content] In order to solve the above problems, the main purpose of this creation is to provide a three-lens optical imaging program, which includes: an aperture diaphragm along the wire------ ;-the first lens, which is a crescent lens, has a positive refracting power; a second translucent '^ low beam gift can be positive falsity or 贞 歧, the second lens object side and the ^ two Wei The image side has at least a "recurve point", the two-way edge of the second lens, and the third lens is positively bent at a near green color, and the third diiodine:: and the image of the third lens Each side has at least - an inflection point, In the second lens center to the edge. The second lens optical imager of this creation has been touched. Consumer (7)
./ U麵J : .·‘、· ·-····# ·ν.:.、 . 〇-29^BFL/TL^〇.3^ ^ (ί) 59.0° ^2ω ^72.0° ⑺ ^鏡可為自透鏡中心向透鏡邊緣為負屈光度逐漸變成 度7鏡I心向透鏡邊緣為正屈光度逐漸變成負屈光 滿足下式(Γ)條I式當第二透鏡為負屈光度逐漸變成正屈光度時 件 若當第 °-7〇O^H27H2t^〇_995 (3) 透鏡為正絲度逐輕成貞就麟滿足下式(4)條 0,755-H2+/H2t^ 0.955 (4) 滿足下列式(5)條件: °·59〇^Η3+/Η3ι^〇.790 (5) 其中,第三 099212536 0993376511-0 M398125 申請補充修正曰期:99年10月21曰 其中’第一透鏡、第二透鏡及第三透鏡之焦距分別滿足下列式 (6)〜(8)條件: 1.21 1.66 (6) -2.40 ^f2/f ^6.34 ⑺ 0.8 l^f3/f ^2.95 ⑻ 其中, BFL為三鏡片光學取像鏡頭之後焦距, TL為光軸上該孔徑光闌至該影像感測器之物側面之距離 2ω為三鏡片光學取像鏡頭之最大鲁說角(maximiimF〇v),./ U-face J: .·',·······# ·ν.:., . 〇-29^BFL/TL^〇.3^ ^ (ί) 59.0° ^2ω ^72.0° (7) ^ The mirror can be from the center of the lens to the edge of the lens, the negative diopter gradually becomes the degree of 7 mirror I. The direction of the lens toward the lens is positive diopter gradually becomes negative refraction. The following formula (Γ) strip I type when the second lens is negative diopter gradually becomes positive diopter If the lens is the first °-7〇O^H27H2t^〇_995 (3) The lens is a straight-lined light, and the lining meets the following formula (4) 0,755-H2+/H2t^ 0.955 (4) (5) Conditions: °·59〇^Η3+/Η3ι^〇.790 (5) Among them, the third 099212536 0993376511-0 M398125 application for supplementary amendments: October 21, 1999, where the 'first lens, the second lens And the focal lengths of the third lens respectively satisfy the following formulas (6) to (8): 1.21 1.66 (6) -2.40 ^f2/f ^6.34 (7) 0.8 l^f3/f ^2.95 (8) where BFL is a three-lens optical take Like the focal length after the lens, TL is the distance from the aperture stop to the side of the image sensor on the optical axis 2ω is the maximum angle of the three-lens optical imaging lens (maximiimF〇v),
Hi為第二透鏡負屈光度變成正屈:光度之界面點以垂直於光轴 與光軸交點之長度,Hi is the second lens negative diopter becomes positive flexion: the interface point of luminosity is perpendicular to the intersection of the optical axis and the optical axis,
Ha為第二透鏡正屈光度變成負屈光度之界面點以垂直於光軸 與光軸交點之長度,Ha is the interface point at which the second lens positive diopter becomes negative diopter to be perpendicular to the intersection of the optical axis and the optical axis,
Hzt為該第二透鏡L2之像側面R4之最大光學有效點以垂直於 光軸Z與光軸Z交點之長度, 出+為該第二透鏡L3之像側面之反曲點以垂直於光轴z與 光軸Z交點之長度, H3t為該第三透鏡L3之侧面R6之最大光學有效賊垂直於 光軸Z與光轴Z交點之長度, f為該三鏡片光學取像鏡頭丨之有效焦距, fi為該第一透鏡L1之有效焦距, 099212536 0993376511-0 M398125 申請補充修正曰期:99年l〇月21曰 込為該第二透鏡L2之有效焦距,以及 G為該第三透鏡L3之有效焦距。 藉此,使本創作可有效修正像差,使取像鏡頭具有高解析度 而又能有效縮小鏡頭長度,達成小型化且較低成本之功效,藉以 提昇取像鏡頭之應用性。 【實施方式】 為使本創作更加明確詳實,落配合下列圖 示’將本創作之結構及技術特徵詳 ..黎.:鐵 參照第1圖所示,本創作係三鏡片光g取像頭卜其沿著光 軸Ζ由物側至像側依序排列,包含:一孔徑光闌(aperturestop) η、一第一透鏡Li、一第二透鏡L2、一第三透鏡L3、一紅外線 滤光片(IR cut-off filter或簡稱為IR/CG)12及一影像感測器(image sensing chip) 13。取像時,物(〇bject)之光線是先經過第一透鏡 L、第二透鏡L2及第三透鏡Q後,再經過紅外線濾光片12而成 像於影像感測器13上。 έ亥孔徑光闌11係屬於一種前置光圈,其設於第一透鏡I〗之 物側面R!前。 該第透鏡Li為具有正屈光度的新月型透鏡,可利用折射率 (Ndl)大於1.5、阿貝數(Vdl)大於55的玻璃或塑膠材質製成。該 第透鏡L丨的物側面&為凸面,而像側面心為凹面,又其物側 面1^及像側少有-面為非球喊雙面均為非球面。 099212536 0993376511-0 10 M398125 ♦ 申請補充修正曰期:99年10月21曰 邊第二透鏡1^2為透鏡中心之物側面尺3是四自、像側面^是 凹面’且物側面R3及像側面K為各具有至少一個反曲點(inflecti〇n Point)之非球面透鏡,可利用折射率〜大於16、阿貝數仏大 於26的玻璃或塑膠材質製成。該第二透鏡^的物側面&及侧 面^4自透鏡中心向透鏡邊緣為負屈光度經過反曲點變成正屈光 度,其斷面自透鏡中心至兩邊緣呈現如河字型之形狀,如第2圖 所示,也就是在物側面及像側面^在近光轴之凸面/或凹面是 向透鏡邊緣逐漸變化弧度(曲率)而轉變成凹面/或凸面,因此在 ® 物側面&及像側面R4分別各形成一反曲點。 當反曲點的切線與光軸z垂直冬又,在像側面κ自反曲點至 光軸Z的垂直距離為該第二透鏡,l2的相掌:負屈光度(equivalent negative refractive power)範圍高度’記為Η2·;如箄2圖所示;第 二透鏡L2像側面&之最大光學有效點(意即第二透鏡^可供光線 通過的最大區域)至光軸Z之垂直距離,記為& %與屯的比值 為相當負屈光度佔最大光學有效點的範圍大小。為能有良好的成 像效果’ Hr與%的比值在70%〜99.5%為較佳。 ® 該第三透鏡La為透鏡中心之物側面&是凸面,而像側面^ 疋凹面,於近光軸處為正屈光度,且物側面及像側面仏為各具 有至少個反曲點(inflection point)之非球面透鏡,可利用折射 率Nd3大於1·5、阿貝數Vd3大於55的玻璃或塑膠材質製成。該第 二透鏡L3的物側面Rs及像側面Rg自透鏡中心向透鏡邊緣為正屈 光度逐漸變成負屈光度,其斷面自透鏡中心至兩邊緣呈現如河字 型之形狀,如第3圖所示,也就是在物側面Rs及像側面^在近光 軸之凸面/或凹面是向透鏡邊緣逐漸變化弧度(曲率)而轉變成凹 面/或凸面,因此在物侧面Rs及像側面^分別各形成一反曲點。 099212536 0993376511-0 11 M398125 申請補充修正曰期:99年10月21曰 當反曲點的切線與光軸Z垂直交又,在像側面^自反曲點至 光軸Z的垂直距離為該第三透鏡Ls的相當正屈光(equivaient positive refractive power)度範圍高度,記為h3+,如第3圖所示; 第二透鏡L3像側面R6之最大光學有效點(意即第三透鏡可供 光線通過的最大區域)至光軸Z之垂直距離,記為%。h3+與屯 的比值為相當正屈光度佔最大光學有效點的範圍大小。為能有良 好的成像效果’ ^^+與1^的比值在59%〜79%為較佳。 該紅外線慮光片12可為一玻璃鏡片,或利用錢膜技術形成一 具有紅外線濾光功能之薄膜。 (-S!荷^承 CMOS (互 該影像感測器13可為CCD 補型金屬氧化物半導體)。 :濟^ , 本創作三鏡片光學取像鏡頭·列丨〜(3)及⑶〜⑻ 條件: 0.29^BFL/TL^0.36 (1) 59.0° ^2ω ^72.0° (2) 0.700 ^Η27Η2ι ^0.995 ⑶ 0.59〇^H3+/H3t^0.790 (5) ⑹ -2.40 ^f2/f ^6.34 ⑺ 〇·8 l^f3/f ^2.95 ⑻ 其中, 099212536 12 0993376511-0 申請補充修正曰期:99年10月21曰 BFL為三鏡片光學取像鏡頭1之後焦距, TL為光軸上該孔徑光闌11至該影像感測器13之物側面之距 離, 2ω為三鏡片光學取像鏡頭1之最大場視角’ Η2_為該第二透鏡L2負屈光度變成正屈光度之界面點以垂直於 光軸Ζ與光軸Ζ交點之長度, H2t為該第二透鏡L2之像側面R4之最大光學有效點以垂直於 光軸Z與光軸Z交點之長度, H3+為該第三透鏡L3之像側面R6.之反曲點以垂直於光軸Z與 光軸Ζ交點之長度, ... · ν H3t為該第三透鏡L3之像側面R6之最大光學有效點以垂直於 光軸Z與光軸Z交點之長度, f為該三鏡片光學取像鏡頭1之有效焦距, fi為該第一透鏡h之有效焦距, 【2為該第二透鏡L2之有效焦距,以及 【3為該第三透鏡L3之有效焦距。 本創作三鏡片光學取像鏡頭丨之第二透鏡匕2的透鏡中心及透 鏡邊緣的屈光度並不限於上述。參照第4圖,該第二透鏡L2的物 側面R3及像側面R4自透鏡中心向透鏡邊緣為正屈光度逐漸變成 負屈光度’其斷面自透鏡中心至兩邊緣呈現如M字型之形狀,也 就是在物_ R3及像側面&在近綠之凸面/或凹面是向透鏡邊 099212536 13 0993376511-0 M398125 申請補充修正曰期:99年10月21曰 緣逐漸變化弧度(曲率)而轉變成凹面/或凸面,因此使屈光度正/ 負轉變之間形成一反曲點。 當反曲點的切線與光軸z垂直交叉,在像側面R4自反曲點至 光軸Z的垂纽離驗第二透鏡[2_當正屈統細高度,記 ,如第5圖所示;第二透鏡^像側面^之最大光學有效點 (思即第二透鏡L2可供光線通過的最大區域)至光軸z之垂直距 離屺為Ha» 1^+與的比值為正屈光度佔最大光學有效點的範Hzt is the maximum optical effective point of the image side surface R4 of the second lens L2, perpendicular to the length of the intersection of the optical axis Z and the optical axis Z, and + is the inflection point of the image side of the second lens L3 to be perpendicular to the optical axis The length of the intersection of z and the optical axis Z, H3t is the maximum optical effective thief of the side R6 of the third lens L3 perpendicular to the intersection of the optical axis Z and the optical axis Z, and f is the effective focal length of the three-lens optical imaging lens , fi is the effective focal length of the first lens L1, 099212536 0993376511-0 M398125 application supplementary correction period: 99 years l〇 21曰込 is the effective focal length of the second lens L2, and G is the third lens L3 Effective focal length. In this way, the creation can effectively correct the aberration, so that the image capturing lens has high resolution and can effectively reduce the length of the lens, thereby achieving miniaturization and low cost, thereby improving the applicability of the image capturing lens. [Embodiment] In order to make this creation more clear and detailed, it is matched with the following illustrations. 'The structure and technical features of this creation are detailed.. Li: Iron refers to Figure 1, the creation of the three lens light g image head Arranging sequentially from the object side to the image side along the optical axis, comprising: an aperture stop η, a first lens Li, a second lens L2, a third lens L3, and an infrared filter An IR cut-off filter (abbreviated as IR/CG) 12 and an image sensing chip 13 are provided. When the image is taken, the light of the object (bject) passes through the first lens L, the second lens L2, and the third lens Q, and then passes through the infrared filter 12 to form an image on the image sensor 13. The 孔径海 aperture diaphragm 11 is a kind of front aperture, which is arranged in front of the object side R! of the first lens I. The first lens Li is a crescent lens having a positive refractive power and can be made of a glass or plastic material having a refractive index (Ndl) of more than 1.5 and an Abbe number (Vdl) of more than 55. The object side surface & of the first lens L is a convex surface, and the image side surface is a concave surface, and the object side surface 1 and the image side are few - the surface is aspherical and the both sides are aspherical. 099212536 0993376511-0 10 M398125 ♦ Apply for additional correction period: October 21, 1999, the second lens 1^2 is the center of the lens. The side 3 is four, the image side is concave, and the object side R3 and image The side surface K is an aspherical lens each having at least one inflecti〇n point, and can be made of a glass or plastic material having a refractive index of ~16 or an Abbe number of more than 26. The side surface & and the side surface of the second lens ^ from the lens center to the lens edge has a negative refracting power through the inflection point to become a positive refracting power, and the cross section of the lens from the center of the lens to the two edges is shaped like a river shape, such as In the figure 2, that is, on the side of the object and the side of the image, the convex surface or the concave surface of the near-optical axis is gradually changed to a curved surface (curvature) toward the edge of the lens to be converted into a concave surface or a convex surface, and thus on the side of the object & The side faces R4 each form an inflection point. When the tangent of the inflection point is perpendicular to the optical axis z, the vertical distance from the inflection point of the image side κ to the optical axis Z is the height of the second lens, l2: the absolute negative refractive power range 'Recorded as Η2·; as shown in Fig. 2; the maximum optical effective point of the second lens L2 like the side & (that is, the maximum area through which the second lens ^ can pass light) to the vertical distance of the optical axis Z, The ratio of & % to 屯 is the range of the range where the maximum negative diopter is the largest optical effective point. In order to have a good imaging effect, the ratio of Hr to % is preferably from 70% to 99.5%. ® The third lens La is the convex side of the object side of the lens, and the convex side of the image side is a positive diopter at the near optical axis, and the object side and the image side 仏 each have at least one inflection point (inflection) The aspherical lens of point) can be made of glass or plastic material having a refractive index Nd3 greater than 1.5 and an Abbe number Vd3 greater than 55. The object side surface Rs and the image side surface Rg of the second lens L3 gradually change from the lens center to the lens edge to a positive refracting power, and the cross section thereof has a shape of a river shape from the center of the lens to both edges, as shown in FIG. That is, on the object side Rs and the image side surface, the convex surface or the concave surface of the near-optical axis is gradually changed into a concave surface or a convex surface toward the edge of the lens, so that the object side surface Rs and the image side surface are respectively formed. A recurve point. 099212536 0993376511-0 11 M398125 Application for Supplementary Amendment: October 21, 1999 When the tangent of the inflection point intersects perpendicularly with the optical axis Z, the vertical distance from the inflection point to the optical axis Z is The range of the equivient positive refractive power of the three lens Ls is recorded as h3+, as shown in Fig. 3; the maximum optical effective point of the side lens R6 of the second lens L3 (that is, the third lens is available for light) The vertical distance from the largest area passed to the optical axis Z is denoted as %. The ratio of h3+ to 屯 is the range of the range where the positive diopter is the largest optical effective point. In order to have a good imaging effect, the ratio of ^^+ to 1^ is preferably from 59% to 79%. The infrared light-receiving sheet 12 may be a glass lens or a film having an infrared light filtering function by using a money film technique. (-S! Loaded CMOS (mutual image sensor 13 can be a CCD-filled metal oxide semiconductor). : ^^, this creation of three lens optical imaging lens · Lennon ~ (3) and (3) ~ (8) Conditions: 0.29^BFL/TL^0.36 (1) 59.0° ^2ω ^72.0° (2) 0.700 ^Η27Η2ι ^0.995 (3) 0.59〇^H3+/H3t^0.790 (5) (6) -2.40 ^f2/f ^6.34 (7) 〇 ·8 l^f3/f ^2.95 (8) Among them, 099212536 12 0993376511-0 Apply for supplementary correction period: October 21, 1999 BFL is the focal length of the three-lens optical image taking lens 1 and TL is the aperture stop on the optical axis 11 to the distance of the object side of the image sensor 13, 2ω is the maximum field angle of the three-lens optical imaging lens 1 'Η2_ is the interface point of the second lens L2 negative diopter becomes positive diopter to be perpendicular to the optical axis Ζ The length of the intersection with the optical axis ,, H2t is the maximum optical effective point of the image side surface R4 of the second lens L2 is perpendicular to the intersection of the optical axis Z and the optical axis Z, and H3+ is the image side R6 of the third lens L3. The inflection point is perpendicular to the length of the intersection of the optical axis Z and the optical axis, ... ν H3t is the maximum optical effective point of the image side R6 of the third lens L3 Straight to the length of the intersection of the optical axis Z and the optical axis Z, f is the effective focal length of the three-lens optical imaging lens 1, fi is the effective focal length of the first lens h, [2 is the effective focal length of the second lens L2, And [3] is the effective focal length of the third lens L3. The diopter of the lens center and the lens edge of the second lens 匕2 of the present invention is not limited to the above. Referring to FIG. 4, the second lens The object side surface R3 and the image side surface R4 of L2 gradually change from a lens center to a lens edge to a negative refracting power. The cross section of the object gradually changes from the center of the lens to the two edges in an M-shaped shape, that is, in the object _ R3 and the image side & The convex or concave surface of the near green is applied to the lens side 099212536 13 0993376511-0 M398125 to apply for a supplementary correction period: October 21, 1999, the edge gradually changes the curvature (curvature) and transforms into a concave surface or a convex surface, thus making the diopter positive / An inversion point is formed between the negative transitions. When the tangent of the inflection point intersects perpendicularly with the optical axis z, the second lens is separated from the inflection point of the image side R4 from the inflection point to the optical axis Z. The height of the system, as shown in Figure 5; The maximum optical effective point of the lens ^ side ^ (the maximum area where the second lens L2 is allowed to pass light) to the optical axis z is the vertical distance 屺 is Ha» 1 ^ + and the ratio is positive diopter to the maximum optical effective point Fan
圍大小^為能有良好的成像效果,H2+與H2t的比值在76%〜76% 為較佳。 如此’本創作三鏡片光學取像〜(2)及(4) 调條件: 震n: 0.29 ^BFL/TL^ 0.36 ::麵 (1) 59.0° ^2ω ^72.0° (2) 0.755 ^H2+/H2t^〇.955 (4) 0.590^H3+/H3t^0.790 (5) 1.21^^/^1.66 ⑹ -2.40 ^f2/f ^6.34 ⑺ 0.81^f3/f^2.95 ⑻ 其中’H2+為該第二透鏡l2正屈光度變成負屈光度界面點以垂 直於光軸與光軸交點之長度,其餘各項參數之定義皆與上述相同。 099212536 0993376511-0 14 M398125 申請補充修正曰期:99年10月21曰 為達到本創作目的,第一透鏡L!、第二透鏡L2及第三透鏡 L3之光學面均為非球面為較佳,但第一透鏡Li不以此為限,也可 以採用球面設計。非球面之方程式(Aspherical Surface Formula ) 為式(9): Z = + W W4 ⑼ 其中’ Z為任一透鏡上任一點以光轴方向至鏡片〇點切平面的距 離(SAG) ’ C是曲率,h為透鏡高度,κ為圓錐係數(Conic Constant)、A4〜AM分別四〜·h四階的非球面係數。 藉上述結構,本創作三鏡片光考取俸鏡頭可有效縮小後焦距 長度及增廣視角,達成小型化且較彳|成幕之功效。 .又: . -. .. 底下玆列舉較佳實施例,分別做一說明: <第一實施例> 第6圖為本創作三鏡片光學取像鏡頭丨第一實施例之光路結 構示意圖。第7圖為本創作三鏡片光學取像鏡頭丨第一實施例之 場曲(fieldcurvature)圖。第8圖為本創作三鏡片光學取像鏡頭1 第一實施例之畸變(distortion)圖。 下表(-)中分糊有由物側至像舰序編號之各光學面號 碼、在光轴z上各光學面之曲率半(單位:_) (theradius of curvature R)光轴 Z 上各物件之間距 ^ on-axis surface spacing),各透鏡之折射率凡、各透鏡之阿貝數(Abbe,s 099212536 0993376511-0 15 M398125 申請補充修正曰期:99年10月21日 number)vd,三鏡片光學取像鏡頭1之有效焦距(focal length)f、最 大場視角(Field of view)FOV(以符號表示為2ω,deS.)及焦距比(f number) Fno ° 表(一)The size of the square ^ can have a good imaging effect, and the ratio of H2+ to H2t is preferably 76% to 76%. So 'this creation three lens optical image ~ (2) and (4) adjustment conditions: shock n: 0.29 ^ BFL / TL ^ 0.36 :: face (1) 59.0 ° ^ 2ω ^ 72.0 ° (2) 0.755 ^ H2 + / H2t^〇.955 (4) 0.590^H3+/H3t^0.790 (5) 1.21^^/^1.66 (6) -2.40 ^f2/f ^6.34 (7) 0.81^f3/f^2.95 (8) where 'H2+ is the second lens L2 positive diopter becomes the negative diopter interface point perpendicular to the intersection of the optical axis and the optical axis, and the other parameters are defined as above. 099212536 0993376511-0 14 M398125 Application for Supplementary Amendment: October 21, 1999 For the purpose of this creation, the optical surfaces of the first lens L!, the second lens L2 and the third lens L3 are all aspherical, However, the first lens Li is not limited thereto, and a spherical design may also be employed. The Aspherical Surface Formula is Equation (9): Z = + W W4 (9) where 'Z is the distance from the optical axis direction to the plane of the lens 〇 point on any lens (SAG) 'C is the curvature, h is the height of the lens, κ is the conic coefficient (Conic Constant), and A4~AM are the fourth-order aspheric coefficients of four to h. With the above structure, the creation of the three-lens light lens can effectively reduce the length of the back focal length and widen the viewing angle, achieving the effect of miniaturization and sturdyness. Further, the following is a description of the preferred embodiment, and the following description is made: <First Embodiment> FIG. 6 is a schematic diagram of the optical path structure of the first embodiment of the three-lens optical imaging lens. . Fig. 7 is a field curvature diagram of the first embodiment of the creation of a three-lens optical image taking lens. Fig. 8 is a distortion diagram of the first embodiment of the three-lens optical imaging lens 1 of the present invention. In the following table (-), each optical surface number from the object side to the ship number, and the curvature of each optical surface on the optical axis z (unit: _) (theradius of curvature R) on the optical axis Z ^ on-axis surface spacing, the refractive index of each lens, the Abbe number of each lens (Abbe, s 099212536 0993376511-0 15 M398125 application supplementary correction period: October 21, 1999 number) vd, The effective focal length f of the three-lens optical image taking lens 1, the field of view FOV (indicated as 2ω, deS.) and the focal length ratio (f number) Fno ° Table (1)
Fno=2.8 卜 2.2000 FOV= 66.0 光學面 曲率半徑F 間距d(mm) 折射率Nd 阿貝數Vd 1 物 OBJ 00 STOP 0.0000 2R,* 1.1944 0.3645 1.53 55.93 3R2* 6.3420 0.5852 4R3* 3.2940 0.3779 1.61 26.00 5R4* 1.0587 、.卵·鐵妒 t*'·ϊ·:Γ··' 6R5* 0.6460 1·53 55.93 7R«* 1.2187 8IR/CG 00 :r〇m. ..零- 9 0.0588 10 像 IMA * 主 dfc ϊΑ’ 00Fno=2.8 Bu 2.2000 FOV= 66.0 Optical surface curvature radius F Spacing d (mm) Refractive index Nd Abbe number Vd 1 Object OBJ 00 STOP 0.0000 2R,* 1.1944 0.3645 1.53 55.93 3R2* 6.3420 0.5852 4R3* 3.2940 0.3779 1.61 26.00 5R4* 1.0587 、, 卵, 铁妒t*'·ϊ·:Γ··' 6R5* 0.6460 1·53 55.93 7R«* 1.2187 8IR/CG 00 :r〇m. .. zero - 9 0.0588 10 like IMA * main dfc ϊΑ' 00
下列表(二)列有各光學面之非球面式⑼之各項係數: 表(二) 光學面 k A4 A6 A8 A10 A12 R.* -2.0176E+00 3.0884E-02 -2.9459E-01 2.7377E-01 -3.5834E+00 -3.7875E+00 r2* •1.1707E+02 -1.6864E-01 -4.1977E-01 -1.7119E-0] -6.4148E+00 1.3379E+01 Rj* -2.2039E+02 -1.7962E-01 -3.3189E-01 -6.0945E-01 1.3583E-01 1.9148E+00 R4* -2.3679E+01 -2.725 IE-01 2.1782E-01 -7.4722E-02 -2.5035E-01 -1.6020E-01 V -4.8748E+00 9.1025E-02 -3.1328E-01 9.0822E-02 9.4773E-02 2.2176E-03 R«* -2.0678E+00 -6.0405E-02 -1.3697E-01 1.9827E-02 3.2187E-02 8.2547E-03 099212536 0993376511-0 16 申請補充修正曰期:99年10月21曰 參考第6〜8圖並配合第1〜3圖,本實施例中,第一透鏡1^係 利用折射率Ndl為1.53、阿貝數%為55 93的塑膠材質製成;第 一透鏡L2係利用折射率^犯為161、阿貝數%為26的塑膠材質 製成;第三透鏡一係利用折射率凡3為].53、阿貝數Vd3為55.93 的塑膠材質製成;紅外線濾光片12係使用BK7玻璃材質製成。 本實施例之三鏡片光學取像鏡頭1之有效焦距f為 2.2000mm、後焦距 bfL 為 0.8588mm、TL 為 2.8702mm。第 —透鏡h之焦距f丨為2.7226mm、第二透鏡l2之焦距f2為 ~2.6901mni、第二透鏡L3之焦距f*3為2,0〇62min。第二透鏡L2像 側面R4之&為1.25mm,1½為1.73_。第三透鏡L3像側面^ 之 H3+為 2.00mm,H3t 為 2.62mm。 經整理,式(1)〜(3)及(5)〜⑻中各值如表(三),因此本創作 之第一實施例滿足式(丨)〜(3)及(5)〜(8)之條件。The following table (2) lists the coefficients of the aspherical surface (9) of each optical surface: Table (2) Optical surface k A4 A6 A8 A10 A12 R.* -2.0176E+00 3.0884E-02 -2.9459E-01 2.7377 E-01 -3.5834E+00 -3.7875E+00 r2* •1.1707E+02 -1.6864E-01 -4.1977E-01 -1.7119E-0] -6.4148E+00 1.3379E+01 Rj* -2.2039E +02 -1.7962E-01 -3.3189E-01 -6.0945E-01 1.3583E-01 1.9148E+00 R4* -2.3679E+01 -2.725 IE-01 2.1782E-01 -7.4722E-02 -2.5035E- 01 -1.6020E-01 V -4.8748E+00 9.1025E-02 -3.1328E-01 9.0822E-02 9.4773E-02 2.2176E-03 R«* -2.0678E+00 -6.0405E-02 -1.3697E- 01 1.9827E-02 3.2187E-02 8.2547E-03 099212536 0993376511-0 16 Application for Supplementary Amendment: October 21, 1999, with reference to Figures 6 to 8 and in conjunction with Figures 1 to 3, in this embodiment, A lens 1 is made of a plastic material having a refractive index Ndl of 1.53 and an Abbe's number of 55 93; the first lens L2 is made of a plastic material having a refractive index of 161 and an Abbe's number of 26; The third lens is made of a plastic material having a refractive index of 3.53 and an Abbe number of Vd3 of 55.93; the infrared filter 12 is made of BK7 glass. Made material. The three-lens optical image taking lens 1 of the present embodiment has an effective focal length f of 2.2000 mm, a back focal length bfL of 0.8588 mm, and a TL of 2.8702 mm. The focal length f 第 of the first lens h is 2.7226 mm, the focal length f2 of the second lens l2 is ~2.6901 mni, and the focal length f*3 of the second lens L3 is 2,0 〇 62 min. The second lens L2 has a side of R4 of 1.25 mm and an 11⁄2 of 1.73_. The H3+ of the image side of the third lens L3 is 2.00 mm, and H3t is 2.62 mm. After finishing, the values in the formulas (1) to (3) and (5) to (8) are as shown in Table (3), so the first embodiment of the present invention satisfies the formulas (丨)~(3) and (5)~(8). ) conditions.
099212536 0993376511-0 17 M398125 申請補充修正曰期:99年10月21曰 <第二實施例> 第9圖為本創作三鏡片光學取像鏡頭丨第二實施例之光路結 構示意圖。第10圖為本創作三鏡片光學取像鏡頭i第二實施例之 場曲圖。第11圖為本創作三鏡片光學取像鏡頭丨第二實施例之畸 變圖。 下表(四)中分別列有由物侧至像側依序編號之各光學面號 碼、在光軸Z上各光學面之曲率半释R (更^呼)、光軸z上 各物件之舰d,各親讀料H、&,三鏡 片光學取像鏡頭1之有效焦距f、參顯_辨細號表示為 2ω,deg.)及焦距比Fno。 表(四)099212536 0993376511-0 17 M398125 Application Supplementary Amendment: October 21, 1999 <Second Embodiment> Fig. 9 is a schematic view showing the optical path structure of the second embodiment of the three-lens optical image taking lens. Fig. 10 is a field curvature diagram of a second embodiment of the creation of a three-lens optical image taking lens i. Fig. 11 is a distortion diagram of a second embodiment of the creation of a three-lens optical image taking lens. In the following table (4), the optical surface numbers sequentially numbered from the object side to the image side, the curvatures of the optical surfaces on the optical axis Z, the half-release R (more call), and the objects on the optical axis z are listed. Ship d, each reading material H, &, the effective focal length f of the three-lens optical image taking lens 1, the parameter _ discriminating number is expressed as 2ω, deg.) and the focal length ratio Fno. Table (4)
光學面 間距d(mm)折射率NdOptical surface spacing d (mm) refractive index Nd
STOP 2Ri* 1.1057 3R2* 3.8583 4R3* 1.5718 5R4* 0.9383 6R5* 0.7541 7R«* 2.1414 8IR/CG 00 9STOP 2Ri* 1.1057 3R2* 3.8583 4R3* 1.5718 5R4* 0.9383 6R5* 0.7541 7R«* 2.1414 8IR/CG 00 9
10 像 IMA *表示為非球面 阿貝數vd 0.0000 0.3506 0.3000 1.53 55.93 0.3000 0.2042 1.61 26.00 0.4579 0.5000 0.3000 0.0588 1.53 55.93 099212536 18 0993376511-0 M398125 申請補充修正曰期:99年10月21曰10 Like IMA * is expressed as aspherical Abbe number vd 0.0000 0.3506 0.3000 1.53 55.93 0.3000 0.2042 1.61 26.00 0.4579 0.5000 0.3000 0.0588 1.53 55.93 099212536 18 0993376511-0 M398125 Application for additional amendments Duration: October 21, 1999
下列表(五)列有各光學面之非球面式(9)之各項係數: 表(五) 光學面 k A4 A6 A8 A10 A12 R,* -2.7793E+00 1.2385E-02 -2.9386E-01 -5.9951E+00 1.3672E+01 -1.0842E+01 -2.2154E+02 -2.5974E-01 -1.8818E+00 -2.5200E+00 •4.5176E+00 1.4534E+00 -3.1509E+01 -3.4076E-01 -2.3441 E-01 -2.0468E+00 -7.8454E+00 -1.6920E+01 R4* -1.61ΠΕ+01 -1.7648E-01 5.1537E-02 -4.1975E-01 -7.6572E-01 2.1768E-02 r5· -6.2216E+00 1.7147E-01 -4.7404E-01 -5.7235E-02 2.0361E-01 8.9524E-02 -2.8960E-01 9.0168E-02 -3.8245E-01 -6.1736E-02 1.1266E-01 6.8244E-02 參考第9〜11圖並配合第丨〜3高,本實施例中,,第一透鏡Ll 係利用折射率>^為1.53、阿貝數Vdl為55.93的塑膠材質製成; 第二透鏡L2係利用折射率為1.61、阿貝數Vd2為26的塑膠材 質製成;第三透鏡L3係利用折射率Nd3為1.53、阿貝數vd3為55.93 的塑膠材質製成;紅外線濾光片12係使用BK7玻璃材質製成。 本實施例之三鏡片光學取像鏡頭1之有效焦距f為 1.8022mm、後焦距 BFL 為 0.8588mm、TL 為 2.4716mm。第 一透鏡之焦距f!為2.8139mm、第二透鏡匕2之焦距&為 -4.5854mm、第三透鏡La之焦距&為ι·_7_。第二透鏡Lj 侧面R4之Hi為1.25mm ’ Η。為1.26min。第三透鏡l3像侧面 之 H3+為 1.50mm,H3t 為 1,93mm。 經整理,式⑴〜(3)及(5)〜(8)中各值如表(六),因此本創作 之第一實施例滿足式(1)〜(3)及(5)〜⑻之條件。 099212536 0993376511-0 19 M398125 申請補充修正日期:99年丨〇月2丨曰 表(六) BFL/TL 0.3475 2ω 70.0 H27H2t 0.991 H3+/H3t 0.777 fl/f 1.5613 f2/f -2.5443 f3/f ------1__—1 1.0990 <第三實施例:> 裏:豫, 第12圖為本創作三鏡片光學取像鏡頭丨第三實施例之光路結 構示意圖。第13圖為本創作三鏡片光學取像鏡頭1第三實施例之 場曲圖。第14圖為本創作三鏡片光學取像鏡頭1第三實施例之畸 變圖。 下表(七)中分別列有由物側至像侧依序編號之各光學面號 碼、在光軸2上各光學面之曲率半徑R (單位:_)、光軸Ζ上 各物件之間距d ’各透鏡之折料&、各透鏡之阿貞數Vd,三鏡 片光學取像鏡頭1之有效焦距f、最大場視角FOV(以符號表示為 2ω,deg.)及焦距比Fno。 ^ 1.8278 FOV= 68.0 表(七) Fno=2.8 099212536 0993376511-0 20 M398125 -- 申請補充修正曰期:99年10月21日 _光學面 曲率半徑F間距d(mm)折射率Nrf阿貝數vh 1 物 OBJ ---- STOP 2R,* 1.2686 3R2* 5.7386 4R3* 1.5350 5R4* 1.9499 6Rs* 2.1719 7R6* 9.6487 8IR/CG 00 9 10 像 IMA 00 0.0000 0.3424 0.6044 1.53 55.93 0.3588 0.0528 1.61 26.00 0.3756 0.5000 0.3000 0.0588 1.53 55.93 *表示為非球面 下列表(八)列有各光學面之非球面式⑼之各項係數: 表(八) 光學面 k A4 A6 A8 A10 A12The following table (5) lists the coefficients of the aspherical (9) of each optical surface: Table (5) Optical surface k A4 A6 A8 A10 A12 R, * -2.7793E+00 1.2385E-02 -2.9386E- 01 -5.9951E+00 1.3672E+01 -1.0842E+01 -2.2154E+02 -2.5974E-01 -1.8818E+00 -2.5200E+00 •4.5176E+00 1.4534E+00 -3.1509E+01 - 3.4076E-01 -2.3441 E-01 -2.0468E+00 -7.8454E+00 -1.6920E+01 R4* -1.61ΠΕ+01 -1.7648E-01 5.1537E-02 -4.1975E-01 -7.6572E-01 2.1768E-02 r5· -6.2216E+00 1.7147E-01 -4.7404E-01 -5.7235E-02 2.0361E-01 8.9524E-02 -2.8960E-01 9.0168E-02 -3.8245E-01 -6.1736E -02 1.1266E-01 6.8244E-02 Referring to Figures 9 to 11 and in conjunction with the third to third heights, in the present embodiment, the first lens L1 uses a refractive index >^ of 1.53 and an Abbe number Vdl of 55.93. The second lens L2 is made of a plastic material having a refractive index of 1.61 and an Abbe number Vd2 of 26; and the third lens L3 is made of a plastic material having a refractive index Nd3 of 1.53 and an Abbe number of vd3 of 55.93. Made of infrared light filter 12 made of BK7 glass material. The three-lens optical image taking lens 1 of the present embodiment has an effective focal length f of 1.8022 mm, a back focal length BFL of 0.8588 mm, and a TL of 2.4716 mm. The focal length f! of the first lens is 2.8139 mm, the focal length &amp of the second lens 匕2 is -4.5854 mm, and the focal length & of the third lens La is ι·_7_. The Hi of the side surface R4 of the second lens Lj is 1.25 mm' Η. It is 1.26min. The H3+ of the image side of the third lens 13 is 1.50 mm, and H3t is 1,93 mm. After finishing, the values in the formulas (1) to (3) and (5) to (8) are as shown in Table (6), so the first embodiment of the present invention satisfies the formulas (1) to (3) and (5) to (8). condition. 099212536 0993376511-0 19 M398125 Application Supplementary Amendment Date: 99 years/month 2丨曰 Table (6) BFL/TL 0.3475 2ω 70.0 H27H2t 0.991 H3+/H3t 0.777 fl/f 1.5613 f2/f -2.5443 f3/f --- ---1__-1 1.0990 <Third Embodiment: > 里:豫, Fig. 12 is a schematic view of the optical path structure of the third embodiment of the creation of the three-lens optical image taking lens. Fig. 13 is a field curvature diagram of the third embodiment of the three-lens optical image taking lens 1 of the present invention. Fig. 14 is a distortion diagram of the third embodiment of the three-lens optical image taking lens 1 of the present invention. In the following table (7), the optical surface numbers sequentially numbered from the object side to the image side, the radius of curvature R of each optical surface on the optical axis 2 (unit: _), and the distance between the objects on the optical axis 列 are listed. d 'Folding of each lens &, the number of Vd of each lens, the effective focal length f of the three-lens optical image taking lens 1, the maximum field of view FOV (indicated by symbols 2ω, deg.), and the focal length ratio Fno. ^ 1.8278 FOV= 68.0 Table (7) Fno=2.8 099212536 0993376511-0 20 M398125 -- Application for Supplementary Amendment: October 21, 1999 _ Optical surface curvature radius F spacing d (mm) Refractive index Nrf Abbe number vh 1 Object OBJ ---- STOP 2R, * 1.2686 3R2* 5.7386 4R3* 1.5350 5R4* 1.9499 6Rs* 2.1719 7R6* 9.6487 8IR/CG 00 9 10 Like IMA 00 0.0000 0.3424 0.6044 1.53 55.93 0.3588 0.0528 1.61 26.00 0.3756 0.5000 0.3000 0.0588 1.53 55.93 * is expressed as the aspherical bottom list (8) lists the coefficients of the aspherical (9) of each optical surface: Table (8) Optical surface k A4 A6 A8 A10 A12
Ri* Rz* R, R4* Rs* V -3.3505E+00 -1.6094E+02 -2.0605E-01 -3.2089E-01 -2.8997E+01 1.3366E+01 -3.0474E-02 -2.1529E-01 -1.4495E-01 -1.8893E-01 -2.5482E-01 -3.1981E-02 -6.5718E-02 -8.932 IE-01 -3.4381E-01 -5.3370E-02 16041E-01 -7.0705E-02 -2.4207E+00 -4.2918E-01 -3.1570E-01 -1.9140E-01 2.6426E-02 -6.7375E-03 3.0268E+00 7.4353E+00 1.8906E-01 -1.8722E-01 1.6093E-02 7.3300E-03 -3.7875E+00 -4.2233E+00 -3.1588E-01 -3.7526E-03 6.0037E-03 3.7386E-03 參考圖1第12〜14圖並g己合第4〜5圖,本實施例中,第一透 鏡1^係利用折射率Ndi為i 53、阿貝數Μ為55 93的塑膠材質製 成;第二透鏡“係利用折射率4為16卜阿貝數仏為26的塑 膠材質製成;第三透鏡1係利用折射率凡3為丨53、阿貝數Vd3為 55.93的塑膠材質製成;紅外線濾光片12係使用BK7玻璃材質製 成0 099212536 0993376511-0 21 M398125 申請補充修正日期:99年10月21曰 本實施例之三制絲取像鏡頭之有效焦距f為丨娜娜、 後焦距BFL為0.8588mm、TL為2 5928_。第一透鏡^之 焦距fi為3.0G74mm、第二透鏡L2之焦距&為8 7398mm、第三透 鏡&之焦距&為5.2221mm。第二透鏡L2像側面R4之h2+為 1.30nmi,H2t 為 1.68皿11。第二透鏡 L3 像側面 % 之 h3+為 1.20rnm, H3t 為 1.95mm。 經整理,式⑴〜(2)及(4)〜⑻中各值如表(九),因此本創 作之第一實施例滿足式(1)〜(2)及(4)〜(8)之條件。 表 BFL/TL 2ω i :.:½¾. H2+/H2t 0.775 H3+/H3t 0.617 fi/f 1.6454 f2/f 4.7816 f3/f 2.8570 <第四實施例> 第15圖為本創作三鏡片光學取像鏡頭1第四實施例之光路結 構示音圖。第16圖為本創作三鏡片光學取像鏡頭1第四實施例之 場曲;。第π圖為本創作三鏡片光學取像鏡頭1第四實施例之畸 變圖。 0993376511-0 099212536 M398125 申請補充修正日期:99年1〇月21曰 下(十)中分別列有由物側至像側依序編號之各光學面號 碼、在光軸z上各光學面之曲率半(單位:麵)、光轴2上 各物件之間距d ’各透鏡之折醉Nd、各透鏡之阿駿Vd,三鏡 片光學取像鋼之有效歧卜最大場視肖謂(以符號表示為 2ω ’ deg.)及焦距比Fno。Ri* Rz* R, R4* Rs* V -3.3505E+00 -1.6094E+02 -2.0605E-01 -3.2089E-01 -2.8997E+01 1.3366E+01 -3.0474E-02 -2.1529E-01 -1.4495E-01 -1.8893E-01 -2.5482E-01 -3.1981E-02 -6.5718E-02 -8.932 IE-01 -3.4381E-01 -5.3370E-02 16041E-01 -7.0705E-02 -2.4207 E+00 -4.2918E-01 -3.1570E-01 -1.9140E-01 2.6426E-02 -6.7375E-03 3.0268E+00 7.4353E+00 1.8906E-01 -1.8722E-01 1.6093E-02 7.3300E -03 -3.7875E+00 -4.2233E+00 -3.1588E-01 -3.7526E-03 6.0037E-03 3.7386E-03 Refer to Figure 1 to Figure 12 to Figure 14 and Figure 4 to Figure 5, this implementation In the example, the first lens 1 is made of a plastic material having a refractive index Ndi of i 53 and an Abbe number 55 of 55 93; and the second lens is a plastic having a refractive index of 4 and an Abbe number of 26 Made of material; the third lens 1 is made of plastic material with refractive index of 353 and Abbe number Vd3 of 55.93; infrared filter 12 is made of BK7 glass material 0 099212536 0993376511-0 21 M398125 Supplementary amendment date: October 21, 1999 有效 The effective focal length f of the three-wire image taking lens of this embodiment is 丨Nana, and the back focal length BFL is 0.8588 mm, T L is 2 5928_. The focal length fi of the first lens ^ is 3.0G74mm, the focal length of the second lens L2 is 8 7398mm, the focal length of the third lens & is 5.2221mm. The second lens L2 is like the side surface R4 of h2+ It is 1.30nmi, H2t is 1.68 dish 11. The second lens L3 image side % h3+ is 1.20rnm, H3t is 1.95mm. After finishing, the values in formulas (1) ~ (2) and (4) ~ (8) are as shown in the table (nine Therefore, the first embodiment of the present invention satisfies the conditions of the formulas (1) to (2) and (4) to (8). Table BFL/TL 2ω i :.:1⁄23⁄4. H2+/H2t 0.775 H3+/H3t 0.617 fi /f 1.6454 f2/f 4.7816 f3/f 2.8570 <Fourth Embodiment> Fig. 15 is a diagram showing the optical path structure of the fourth embodiment of the three-lens optical imaging lens 1 of the present invention. Fig. 16 is a field curvature of the fourth embodiment of the three-lens optical imaging lens 1 of the present invention; The πth diagram is a distortion diagram of the fourth embodiment of the three-lens optical imaging lens 1 of the present invention. 0993376511-0 099212536 M398125 Application Supplementary Amendment Date: 99 years, 1 month, 21 pm (10), respectively, the optical surface numbers numbered sequentially from the object side to the image side, and the curvature of each optical surface on the optical axis z Half (unit: face), the distance between the objects on the optical axis 2 d' dinch Nd of each lens, the Ajun Vd of each lens, the effective dislocation of the three lens optical image steel maximum field view (indicated by symbol It is 2ω ' deg.) and the focal length is Fno.
表(十)Table (10)
Fno- 2.8 1.8794 FOV= 60.6 光學面 曲率半徑F 間距d(mm) 折射率Nd 阿貝數vd 1 物 OBJ 00 STOP 0.0000 2Ri* 1.2923 ;;:Ό.3436 1.53 55.93 3R2* 6.1716 7: 0.6;G5 ^ '· 4R3* 1.4709 ::0.3527 1.61 26.00 5R4* 1.6812 0.0581 6Rj* 2.3758 0.4214 1.53 55.93 7Ri* 28.6181 0.5000 8IR/CG 00 0.3000 9 0.0588 10 像 IMA 00 *表示為非球面 下列表(十一)列有各光學面之非球面式(9)之各項係數: 表(十一) 光學面 k A4 A6 A8 A10 A12 R.* -3.5067E+00 •3.7818E-02 -9.0675E-02 -2.5981E+00 3.5942E+00 -3.7875E+00 R, •2.2057E+02 -2.2972E-01 •8.7809E-01 -1.5477E-01 4.6148E+00 -4.2233E+00 R3* -1.969IE-01 -1.3735E-01 -4.2187E-01 -2.8456E-01 4.3571E-01 -2.3183E-01 R4* -2.0960E-01 -1.8669E-01 -5.5770E-02 -1.9847E-01 -1.8280E-01 2.2850E-02 r5* -4.1665E+01 -2.4208E-01 1.6604E-01 3.4584E-02 2.6418E-02 2.0608E-02 Rs* -3.1774E+01 -3.2289E-02 -8.0285E-02 4.3785E-03 2.0176E-02 1.0421E-02 099212536 0993376511-0 23 8Γ2:) I 申請補充修正曰期:99年10月21曰 >第 I?圖並配合第4〜5圖,本實施例中,第一透鏡 用折射率>^為153、阿貝數v⑴為55 93的塑膠材質製成; 一透鏡L2係利用折射率&為丨说、阿貝數仏為%的塑膠材 質製成’第二透鏡l3係利用折射率凡3為153、阿貝數w為55 93 的塑膠材質製成;紅外線渡光片I2係使用BK7玻璃材質製成。 本實施例之三鏡片光學取像鏡頭1之有效焦距f為 I. 8794職、後焦距BFL為〇 8588腿、TL為2 645〇匪。第Fno- 2.8 1.8794 FOV= 60.6 Optical surface curvature radius F Spacing d (mm) Refractive index Nd Abbe number vd 1 Object OBJ 00 STOP 0.0000 2Ri* 1.2923 ;;:Ό.3436 1.53 55.93 3R2* 6.1716 7: 0.6;G5 ^ '· 4R3* 1.4709 ::0.3527 1.61 26.00 5R4* 1.6812 0.0581 6Rj* 2.3758 0.4214 1.53 55.93 7Ri* 28.6181 0.5000 8IR/CG 00 0.3000 9 0.0588 10 Like IMA 00 *Expressed as aspherical list (11) Listed with optics Coefficients of aspherical surface (9): Table (11) Optical surface k A4 A6 A8 A10 A12 R.* -3.5067E+00 •3.7818E-02 -9.0675E-02 -2.5981E+00 3.5942 E+00 -3.7875E+00 R, •2.2057E+02 -2.2972E-01 •8.7809E-01 -1.5477E-01 4.6148E+00 -4.2233E+00 R3* -1.969IE-01 -1.3735E- 01 -4.2187E-01 -2.8456E-01 4.3571E-01 -2.3183E-01 R4* -2.0960E-01 -1.8669E-01 -5.5770E-02 -1.9847E-01 -1.8280E-01 2.2850E- 02 r5* -4.1665E+01 -2.4208E-01 1.6604E-01 3.4584E-02 2.6418E-02 2.0608E-02 Rs* -3.1774E+01 -3.2289E-02 -8.0285E-02 4.3785E-03 2.0176E-02 1.0421E-02 099212536 0993376511-0 23 8Γ2:) I Apply for Correction period: October 21, 1999 > I? and with the 4th to 5th drawings, in the present embodiment, the first lens has a refractive index >^ of 153, and the Abbe number v(1) is 5593. Made of a material; a lens L2 is made of a plastic material having a refractive index & 丨, Abbe number %% 'the second lens l3 is a refractive index of 3, 153, and an Abbe number w of 55 93. Made of plastic material; infrared light film I2 is made of BK7 glass material. The effective focal length f of the three-lens optical imaging lens 1 of the present embodiment is I. 8794, the back focal length BFL is 〇 8588 legs, and TL is 2 645 〇匪. First
一透鏡L!之焦距fl為3.0246mm、第二透鏡q之焦距&為 II. 5513mm、第三透鏡L3之焦距f3為4 8838_。第二透鏡^像 側面仏之仏+為⑽腿’仏為L3像側面^ 之 Η〗.為 1.12mm,屯為 1.70mm。Ί !., ,,, 經整理,式(1)〜(2)及(4)〜⑻爲滿表,因此本 創作之第一實施例滿足式(1)〜(2)及(4)〜(8)之條件。 表(十二)The focal length fl of one lens L! is 3.0246 mm, the focal length & of the second lens q is II. 5513 mm, and the focal length f3 of the third lens L3 is 4 8838_. The second lens ^ image is 仏 为 + is (10) leg '仏 is L3 image side ^ Η〗 1.12mm, 屯 is 1.70mm. Ί !., ,,, After finishing, the formulas (1) to (2) and (4) to (8) are full tables, so the first embodiment of the present invention satisfies the formulas (1) to (2) and (4) (8) Conditions. Table (12)
0993376511-0 099212536 24 M398125 申請補充修正日期:99年10月21曰 由上述各表及圖示,可知上述各實施例三鏡片光學取像鏡頭j 之後焦距BFL=0.8588mm、最大場視角2ω為6〇 6〜7〇。。藉此可證0993376511-0 099212536 24 M398125 Application Supplementary Amendment Date: October 21, 1999. From the above table and illustration, it can be seen that the focal length BFL=0.8588mm and the maximum field angle of view 2ω are 6 after the above-mentioned three lens optical imaging lenses j. 〇 6~7〇. . This can be proved
明本創作之三鏡片光學取像鏡頭1可有效縮短後焦距長度及增廣 場視角。 曰S 以上所述僅為本創作的優選實施例,對本創作而言僅是說明 性的,而非限制性的;本專業技術領域具通常知識人員理解在The three lens optical imaging lens 1 created by Ming Ben can effectively shorten the back focal length and the wide field of view. The above description is only a preferred embodiment of the present invention, and is merely illustrative and not limiting for the present invention; those skilled in the art understand that
本創作權利要求所限定的精神和範圍内可對其進行許多改變,修 改,甚至等效變更,但都將落入本創作的保護範圍内。 / ,-·'· * . · · ··,- ' 匕···· : ;· · 、· * . .. ;. 【圖式簡單說明】 • ·‘ 第1圖為本創作之三鏡片光學取像鏡頭之光學結構示意圖; 第2圖為第1圖的第二透鏡之像側面之反曲點、氏及%之示魚 圖; 、。Many changes, modifications, and equivalent modifications may be made in the spirit and scope of the invention as defined by the appended claims. / ,-·'· * . · · ··, - ' 匕····: :···· * . . . ;. [Simple description of the diagram] • ·' The first picture is the three lenses of the creation Fig. 2 is a schematic view showing the optical structure of the optical image taking lens; Fig. 2 is a view showing the inflection point of the image side of the second lens in Fig. 1 and the fish chart of %;
第3圖為第1圖的第三透鏡之像側面之反曲點、H3+及H3t之示音 圖; …、思 第4圖為本創作之三鏡片光學取像鏡頭之另-鱗結構示意圖; 第5圖為第4圖的第二透鏡之像側面之反曲點、H2+及H2t之示竞 圖, 第6圖為本創作之三鏡片光學取像鏡頭之第-實施例之光路結構 示意圖; 、。 第7圖為本創作之三鏡#光學取像鏡頭之第_實施例之場曲圖; 099212536 25 0993376511-0 第8 申請補充修正日期:99年丨〇月21日 θ 本創作之三鏡片光學取像鏡頭之第一實施例之畸變圖; ^圖圖為本創作之三鏡片光學取像鏡頭之第二實施例之光路結構 第10圖為本創作之三鏡片光學取像鏡頭之第二實施例之場曲圖; 第11圖為本創作之三鏡片光學取像鏡頭之第二實施例之畸變圖; 第12圖為本創作之三鏡片光學取像鏡頭之第三實施例之光路結構 示意圖;Fig. 3 is a diagram showing the inflection point of the image side of the third lens in Fig. 1 and the sound map of H3+ and H3t; ..., Fig. 4 is a schematic diagram of another scale structure of the three lens optical imaging lens of the present invention; 5 is a view of the inflection point of the image side of the second lens of FIG. 4, H2+ and H2t, and FIG. 6 is a schematic view showing the optical path structure of the third embodiment of the optical lens of the lens; ,. Figure 7 is the field curve of the third embodiment of the optical lens of the creation of the invention. 099212536 25 0993376511-0 The eighth application supplementary correction date: 99 years of the 21st day θ Taking the distortion diagram of the first embodiment of the lens; FIG. 10 is the second embodiment of the optical lens of the third lens optical imaging lens of the third embodiment of the present invention. The field curvature diagram of the example; the 11th figure is a distortion diagram of the second embodiment of the three-lens optical imaging lens of the present invention; FIG. 12 is a schematic diagram of the optical path structure of the third embodiment of the three-lens optical imaging lens of the present invention. ;
第13圖為本創作之三鏡片光學取像鏡頭之第三實施例之場曲圖; 第14圖為本創作之三鏡片光學取廣鐵讀_运_例之畸變圖; 以及 :;::、,.^:逆: 第15圖為本創作之三鏡片光學取像鏡頭之第四實施例之光路結構 示意圖。Figure 13 is a field curvature diagram of a third embodiment of the three-lens optical imaging lens of the present invention; Figure 14 is a distortion diagram of the optical lens of the third lens of the creation; and:::: , . . . : inverse: Figure 15 is a schematic diagram of the optical path structure of the fourth embodiment of the three-lens optical imaging lens of the present invention.
第16圖為本創作之三鏡片光學取像鏡頭之第四實施例之場曲圖。 第17圖為本創作之三鏡片光學取像鏡頭之第四實施例之畸變圖。 【主要元件符號說明】 1 :三鏡片光學取像鏡頭; Ζ .光抽, L,:第一透鏡; L2 :第二透鏡; L3 :第三透鏡; 0993376511-0 099212536 26 M398125 申請補充修正日期:99年10月21曰 11 :孔徑光闌; 12 :紅外線濾光片; 13 :影像感測器; R1 :第一透鏡之物側面; 化:第一透鏡之像側面; R3 :第二透鏡之物側面; K :第二透鏡之像側面; K·5 :第三透鏡之物側面; R6:第三透鏡之像側面;Figure 16 is a field curvature diagram of a fourth embodiment of the three-lens optical imaging lens of the present invention. Figure 17 is a distortion diagram of a fourth embodiment of the three-lens optical imaging lens of the present invention. [Explanation of main component symbols] 1 : Three-lens optical imaging lens; Ζ Light extraction, L,: First lens; L2: Second lens; L3: Third lens; 0993376511-0 099212536 26 M398125 Application supplementary date: October 21, 2011: aperture stop; 12: infrared filter; 13: image sensor; R1: object side of the first lens; chemistry: image side of the first lens; R3: second lens Side of the object; K: image side of the second lens; K·5: object side of the third lens; R6: image side of the third lens;
V dl :光軸上物至第一透鏡之物側面的距離; 屯:光軸上第一透鏡之物側面至像側面的距離; 屯:光軸上第一透鏡之像侧面至第二透鏡物側面的距離; 山:光軸上第二透鏡之物侧面至像側面的距離; 屯:光軸上第二透鏡之像側面至第三透鏡物側面的距離; 4 .光軸上第三透鏡之物側面至像側面的距離; 山.光軸上第三透鏡之像側面至紅外線濾光片物側面的距離; 山.光軸上紅外線濾光片之物側面至像側面的距離; 4 .光軸上紅外線濾光片之像側面至影像感測器之物側面的距 離。 099212536 27 0993376511*0 M398125 申請補充修正曰期:99年ι0月21曰V dl : the distance from the object on the optical axis to the side of the object of the first lens; 屯: the distance from the side of the object of the first lens to the side of the image on the optical axis; 屯: the image side of the first lens on the optical axis to the second lens Distance of the side; Mountain: the distance from the side of the object of the second lens to the side of the image on the optical axis; 屯: the distance from the image side of the second lens on the optical axis to the side of the third lens; 4. The third lens on the optical axis The distance from the side of the object to the side of the image; the distance from the side of the image of the third lens on the optical axis to the side of the infrared filter; the distance from the side of the object of the infrared filter on the optical axis to the side of the image; The distance from the image side of the on-axis infrared filter to the side of the image sensor. 099212536 27 0993376511*0 M398125 Application for Supplementary Amendment: 99 years ι0月21曰
Hr:第二透鏡負屈光度變成正屈光度之界面點以垂直於光輛與 光軸交點之長度; 'Hr: the second lens negative diopter becomes the interface point of positive diopter to be perpendicular to the length of the intersection of the light and the optical axis;
Ha:第二透鏡正屈光度變成負屈光度之界面點以垂直於光轴與 光軸交點之長度; ^Ha: the second lens positive diopter becomes the interface point of the negative diopter to be perpendicular to the intersection of the optical axis and the optical axis; ^
Hu :第二透鏡之像側面之最大光學有效點以垂直於光軸與光轴 交點之長度; Ηρ:該第三透鏡之像側面之反曲點以垂直於光軸與光軸交點之 長度;以及Hu: the maximum optical effective point of the image side of the second lens is perpendicular to the intersection of the optical axis and the optical axis; Ηρ: the inflection point of the image side of the third lens is perpendicular to the intersection of the optical axis and the optical axis; as well as
099212536 0993376511-0 28099212536 0993376511-0 28
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TW99212536U TWM398125U (en) | 2010-06-30 | 2010-06-30 | Three-piece pickup lens |
Country Status (1)
Country | Link |
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TW (1) | TWM398125U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI557463B (en) * | 2014-12-03 | 2016-11-11 | 先進光電科技股份有限公司 | Optical image capturing system |
US9897779B2 (en) | 2015-09-30 | 2018-02-20 | Apple Inc. | Camera lens system with three lens components |
-
2010
- 2010-06-30 TW TW99212536U patent/TWM398125U/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI557463B (en) * | 2014-12-03 | 2016-11-11 | 先進光電科技股份有限公司 | Optical image capturing system |
US9729771B2 (en) | 2014-12-03 | 2017-08-08 | Ability Opto-Electronics Technology Co., Ltd. | Optical image capturing system |
US9897779B2 (en) | 2015-09-30 | 2018-02-20 | Apple Inc. | Camera lens system with three lens components |
TWI633358B (en) * | 2015-09-30 | 2018-08-21 | 美商蘋果公司 | Camera lens system with three lens components |
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Legal Events
Date | Code | Title | Description |
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MM4K | Annulment or lapse of a utility model due to non-payment of fees |