M364864 五、新型說明： 【新型所屬之技術領域】 本創作有關於使被攝體的光學像成像在CCDCCharge Coupled Device:電荷耦合器件）或 CMOS(c〇mplementary 5 Metal Oxide Semiconductor :互補金屬氧化物半導體）等的 攝影元件上的攝影透鏡、及搭載該攝影透鏡進行拍攝的數 位攝衫機或f攝影機的手機及資訊便攜終端（pda : Personal Digital Assistance:個人數位助理）等的攝影裝置。 10 20 【先前技術】 近幾年，伴隨個人電腦向一般家庭等的普及，可以將 拍攝的風景或人物像等圖像資訊輸入到個人電腦的數位攝 影機正在快速地普及。而且，在手機搭載圖像輸入用的攝 影機模組的現象也在增多。在具有這種攝影功能的設備可 以使用CCD或CMOS等的攝影元件。最近，這些攝影元件 的緊湊性進步’攝影設備整體以及搭載於此的攝影透鏡， 也要求緊凑性。而且同時，攝影元件的高像素也在進步， 要求攝影透鏡的高分辨、高性能。例如要求對應2百萬像素 以上’更爲適合的是5百萬像素以上的高像素的性能。 對於這種要求，例如，將透鏡的整體結構設爲與空氣 :觸的面成爲六個的三組結構，從而謀求緊湊化及低成本 日q而且，4 了謀求高性能化可以考慮積極使用非球面（參 ，尽專利文獻1至4 )。此時，韭枝 寻非球面對緊湊化及高性能化做 出貝獻，但最大限度發揮這效果的基礎上，較佳地，非球M364864 V. New description: [New technical field] This creation is about imaging the optical image of the subject in CCDCCharge Coupled Device: CMOS (c〇mplementary 5 Metal Oxide Semiconductor) A photographing lens on a photographing element such as a photographing device, and a photographing device such as a digital camera or a f-camera mobile phone and a information portable terminal (pda: Personal Digital Assistance) equipped with the photographing lens. 10 20 [Prior Art] In recent years, with the spread of personal computers to general households, digital cameras that can input image information such as landscapes or portraits to personal computers are rapidly spreading. Furthermore, there has been an increase in the number of camera modules for image input on mobile phones. A photographic element such as a CCD or a CMOS can be used for a device having such a photographing function. Recently, the compactness of these photographic elements has progressed. The entire photographic apparatus and the photographic lens mounted thereon also require compactness. At the same time, the high pixel of the photographic element is also progressing, requiring high resolution and high performance of the photographic lens. For example, it is required to correspond to 2 megapixels or more. More suitable is the performance of high pixels of 5 megapixels or more. In response to such a request, for example, the overall structure of the lens is set to a three-group structure in which the air: touch surface is six, and the compactness and low-cost date q are achieved, and the high performance can be considered. Spherical surface (see Patent Documents 1 to 4). At this time, the lychee seeks the non-ball to face the compactness and high performance, but to maximize the effect, preferably, the non-ball
V M364864 面的使用是充分考慮製造性的。此外，在專利文獻5公開有 在第一組至第三組的各組使用組合透鏡的攝影透鏡。 專利文獻1:曰本專利公開2007-86485號公報。 專利文獻2 :曰本專利公開2〇〇5_1744〇號公報。 5 專利文獻3 :曰本專利公開2005-17439號公報。 專利文獻4 :曰本專利公開2002-228922號公報。 專利文獻5:日本專利第3976782號公報。 : 然而’在攝影裝置中’使透鏡系統變明亮是爲了高動 態範圍的獲得、或可以在低亮度環境下的攝影、根據像素 10間距的縮小的光輸入變換效率的上升。因此，希望開發亮 且緊湊的透鏡系統，但上述各專利文獻所述的攝影透鏡， 即使是明亮的透鏡，F數也只不過在2 6〜2 8左右，要想對 應更明売的透鏡系統（例如，以F數爲2·5以下）則性能不 充分。 15 【新型内容】 a本創作是借鑒於這種問題點而提出的，其目的在於， β :種謀求緊凑化及低成本化的同時可實現與過去相比 Ζ亮且高成像性能的三組結構的攝f彡透鏡，及搭載該三組 構的攝W透鏡而可以得到高分辨的攝影圖像的攝影裝 =本創作的二組結構的攝影透鏡，從物側依次具 近物側的面設爲凸面，並且作爲整體具有正的光 向二透鏡組，作爲整體光轴附近的形狀爲將凹面朝 D貝’的彎月形狀的第二透鏡組；以及最靠近物側的面在 25 M364864 光軸附近設爲凸面，並且最靠近物側的面或像側的面具有 在周邊部和面頂點位置之間朝向像側爲凸形狀的形狀部分 的第三透鏡組，而且，構成爲滿足以下條件式： 刀 0.19^ CA/TL^ 0.6 ...... ( 1 ) 0.5^D12a/f^ 1.2 ……（2) 1.2^ TL/fS 1.7 ...... (3) BF/TL^ 0.35 ...... (4) 此處， CA :入瞳直徑（直徑） 1〇 TL:總長（從最靠近物側的透鏡面到像面的光軸上距 離。比第三透鏡組靠像面側爲空氣換算長度） BF:後截距（從第三透鏡組的最靠近像側的透鏡面頂 點到像面的光軸上的距離（空氣換算長度）） D12a :從第一透鏡組的最靠近物側的透鏡面到第二 15鏡組的最靠近像側的透鏡面的光軸上距離 f :整體的近轴焦距。 在根據本創作的三組結構的攝影透鏡中，由整體作爲 三組結構的比較少的透触構成，從而& ::長而且’透過謀求各透銳組的結構的最佳化::: 制〜、長的同時可以得到與過去相比明亮且高成像性能。例 ^ ’尤其將有利於像面校正的最#近像側的第三透鏡组的 透鏡形狀透過有效地使用非球面而進行最佳化，從而有利 於確保寬視場角及亮度。此外，透過滿足有利於確 的縮短和亮度的規Μ件式，從而抑制總長且維持高^ 20 M364864 性能的同時可以確保與過去相比充分的 而且，透過適當選擇地採 儿又 於以宾痄七士你α处& 且滿足以下較佳結構，關 於以冗度或成像性能騎的整個 肖 利的結構。 注此了以成爲更加有 在本創作的三組結構的攝影 滿足以下條件。 ^透鏡中’較佳適當選擇地 D3g/f3^ 0.65 ...... ( 5) 〇.7^f/YiM^4.〇 (6) 〇.65^D12a/f^ 1.〇 .. ( 2，） 10 15 0.20^ Dlg/fl ^ 0.75 ...... (7) 〇.45SRl/f$ 1.〇 ..·..· ( 8) -〇.5^f2/f3 (45- ^ d2g) ……（9) 0.03SBF/DLS0.5 …(1〇) 1.6SN1 ……(11) 〇.5^f/fl^ 1.05 ....·. ( 12) 0.24^ Dlg/f^ 0.9 ...... (13) 此處， YIM :最大像高 Π :第一透鏡組的近軸焦距The use of V M364864 is fully considered for manufacturability. Further, Patent Document 5 discloses an photographic lens that uses a combined lens in each of the first to third groups. Patent Document 1: Japanese Patent Laid-Open Publication No. 2007-86485. Patent Document 2: Japanese Patent Publication No. 2〇〇5_1744〇. 5 Patent Document 3: Japanese Patent Laid-Open Publication No. 2005-17439. Patent Document 4: Japanese Patent Laid-Open Publication No. 2002-228922. Patent Document 5: Japanese Patent No. 3976782. However, the fact that the lens system is brightened in the "photographing device" is for obtaining a high dynamic range, or for shooting in a low-luminance environment, and for increasing the light input conversion efficiency according to the reduction of the pitch of the pixels 10. Therefore, it is desired to develop a bright and compact lens system. However, even for a bright lens, the F-number of the photographic lens described in each of the above patent documents is only about 26 to 28, in order to correspond to a more conspicuous lens system. (For example, if the F number is 2.5 or less), the performance is insufficient. 15 [New content] a This book is based on this problem. Its purpose is to achieve a compact and high-cost imaging performance compared to the past. The camera lens of the group structure and the camera lens equipped with the three-frame structure can obtain a high-resolution photographic image. The two-group photographic lens of the present invention has a near-object side from the object side. The surface is convex, and has a positive light toward the two lens group as a whole, the shape of the vicinity of the entire optical axis is a second lens group having a concave shape toward the D-shaped shape; and the surface closest to the object side is at 25 M364864 is a convex surface near the optical axis, and the surface closest to the object side or the image side has a third lens group having a shape portion that is convex toward the image side between the peripheral portion and the surface vertex position, and is configured to satisfy The following conditional formula: Knife 0.19^ CA/TL^ 0.6 ...... (1) 0.5^D12a/f^ 1.2 ......(2) 1.2^ TL/fS 1.7 ...... (3) BF/ TL^ 0.35 (4) Here, CA: diameter of the entrance pupil (diameter) 1〇TL: total length (from the lens surface closest to the object side) The distance on the optical axis of the image plane is the air-converted length from the image side of the third lens group. BF: the back intercept (from the apex of the lens surface closest to the image side of the third lens group to the optical axis of the image plane) Distance (air conversion length)) D12a: distance from the lens surface closest to the object side of the first lens group to the lens surface closest to the image side of the second 15 lens group: the overall paraxial focal length. In the photographic lens of the three-group structure according to the present creation, the whole is constituted as a relatively small number of translucent structures of the three-group structure, thereby &::long and 'optimizing the structure of each translucent group by::: The system is long and bright and has high imaging performance compared to the past. In particular, the lens shape of the third lens group which is advantageous for the face-corrected most near image side is optimized by effectively using the aspherical surface, thereby facilitating the securing of the wide angle of view and brightness. In addition, by satisfying the rule of the cut-off and brightness, it is possible to suppress the total length and maintain the high performance of the M 20864 while ensuring that it is sufficient compared with the past and that it is properly selected and adopted. Seventh you are at the & and meet the following preferred structure for the entire Shoreley structure that rides with redundancy or imaging performance. Note that the following conditions are met in order to become more attractive in the three-group structure of this creation. ^ Lens in the lens is preferably appropriately selected D3g/f3^ 0.65 ...... (5) 〇.7^f/YiM^4.〇(6) 〇.65^D12a/f^ 1.〇.. ( 2,) 10 15 0.20^ Dlg/fl ^ 0.75 ...... (7) 〇.45SRl/f$ 1.〇..·..· (8) -〇.5^f2/f3 (45 - ^ d2g) ......(9) 0.03SBF/DLS0.5 ...(1〇) 1.6SN1 ......(11) 〇.5^f/fl^ 1.05 ..... ( 12) 0.24^ Dlg/f ^ 0.9 ...... (13) Here, YIM: maximum image height: the paraxial focal length of the first lens group
Dig:第一透鏡組内的透鏡的中心厚度的合計 D3g:第三透鏡組内的透鏡的中心厚度的合計 R1:第一透鏡組的最靠近物側的透鏡面的近軸曲率半 f2 :第二透鏡組的近軸焦距 M364864 f 3 :第三透鏡組的近軸焦距 ^d2g.在第二透鏡組内中心厚度最厚的透鏡的阿貝 數 、 、DL:從第一透鏡組的最靠近物側的透鏡面頂點到第三 5透鏡組的最靠近像側的透鏡面頂點的光轴上的距離 N1 :在第-透鏡組内中心厚度最厚的透鏡的折射率 :第一透鏡組的近軸焦距。 而且，在本創作的三組結構的攝影透鏡中，第一透鏡 組可以由玻璃透鏡構成。透過將最靠近物側的第一透鏡組 1〇設爲玻璃透鏡，從而有利於例如在高溫高濕環境下的使用 等。 此外，在本創作的三組結構的攝影透鏡中，可以在第 一透鏡組、第二透鏡組、或第三透鏡組中至少一個組設爲 複合非球面透鏡。而且，複合非球面透鏡也可以由平板狀 15透鏡基板、形成於透鏡基板的物側的面侧的物側非球面透 部、和形成於透鏡基板的像側的面側的像侧非球面透鏡 部構成，透鏡基板和物側非球面透鏡部的阿貝數之差、及 透鏡基板和像侧非球面透鏡部的阿貝數之差分別設爲滿足 以下條件式（14)的阿貝數差△以對樣的阿貝數差）， 2〇並且透鏡基板和物側非球面透鏡部的折射率之差、及透鏡 基板和像側非球面透鏡部的折射率之差分別設爲滿足以下 條件式（15)的折射率差(對d線的折射率差）。 ΙΔ 2^ 10 ...... ( Η) ΙΔΝΙ^Ο.1 .·.··. ( 15) M364864 而且’在本創作的三組結構的攝影透鏡中，還可以具 ^光二此時，較佳地，使得光閑配設在光軸上的位置比 抽上的位置比第一==側;更佳地’配設成其在光 5 15 透鏡！的重心位置更靠物側並且比 透鏡組的最靠近物側的面頂點位置更靠像側。 創作的攝影襄置具備:根據本創作的三 應的攝影信號的攝影元件。攝“料成的先學像對 透過根據本創作的攝影裝置，基於由本創作的攝 兄而得到的尚分辨的光學像可以得到高分號 根據本創作的三組結構的攝影透鏡，在作爲整體^ =的比較少的透鏡組中，有效地使用非球面的同時： 滿足有利於確保總長的縮短和亮度读 :構的整體的最佳化，所以謀求緊凑化及低成本I: 時’可以實現與過去相比明亮且高成像性能。 … 而且，根據本創作的攝影裝置，使得輸出與上 ^高性能^結構賴影透鏡形成的光學像對應的_ 圖所以基於該攝影信號可以得到明亮且高分辨的攝影 20 【貫施方式】 以下’參照圖面對本創作的實施方式進行詳細說明。 圖1表示本創作的一實施方式相關的攝影透鏡的 結構例。該結構例對應於後述的第一數值實施例 圖29)的透鏡結構。同樣地’在圖2至圖14表示對 述 25 M364864 的第二至第十四的數值實施例（圖16至圖28及圖3〇至圖42 ) J 的透鏡結構的第二至第十四的結構例的剖面結構。在圖j 、 至圖14中，符號Ri表示最靠近物側的透鏡因素的面作爲第i 個、隨著朝向像側（成像側）依次增加而附上符號的第i 5個面的曲率半徑。符號Di表示第丨個面和第i+1個面的光軸 Z1上的面間隔。另外，各結構例的基本結構均相同，因此， 在以下以圖1所示的攝影透鏡的結構例作爲基本進行說 明，根據需要也對圖2至圖14的結構例進行說明。 本實施方式相關的攝影透鏡，適於在使用戋 10 CMOS等攝影元件的各種攝影設備尤其比較小型的攜帶終 端設備例如數位靜止攝影機、帶攝影機的手機、及PDA等 中使用。該攝影透鏡沿著光軸21從物側依次具備第一透鏡 組G1、第二透鏡組G2、和第三透鏡組。 ，本實施方式相關的攝影裝置具備本實施方式相關的 15攝影透鏡、和輸出與透過該攝影透鏡形成的光學像對應的 攝純號的CCD等的攝影元件1〇〇而構成。攝影元件⑽配 # f在該攝影透鏡的成像面（攝影面）。在第三透鏡組⑽ 攝〜70件100之間’根據安裝透鏡的攝影機側的結構可以配 置有各種光學部件CG。例如也可以配置有攝影面保護用蓋 -20玻璃或紅外線截止遽光片等平板狀的光學部件。此時，作 : 以學部件⑶，也可以使用例如在平板狀的蓋朗施加了 紅外線截止渡光片或ND濾光片等有渡光效果的塗層的光 、 學部件。 a ;尤 該攝影透鏡作爲光線限制機構還具有光闌St。光闌St M364864 是光學性孔徑光闌（明亮度光闌），較佳配置在第一透鏡 組G1的前後。例如，較佳地，光闌St設爲所謂“前側光 闌”’使得光軸Z1上的位置配設在比第一透鏡組gi的重心 位置更靠物侧。更佳地’也可以配設成光軸21上的位置比 5第一透鏡組G1的重心位置更靠物側，並且比第一透鏡組G1 的最靠近物側的透鏡面頂點位置更靠像側。在本實施方式 中，第一至第八的結構例的透鏡（圖1至圖8)是相當於前 側光闌的結構例。 而且，光闌St可以配置在第一透鏡組（}1和第二透鏡組 10 G2之間的所謂“中光闌”的結構。在本實施方式中，第九 至第十四的結構例的透鏡（圖9至圖14)是相當於中光闌的 結構例。 此外，作爲光線限制機構也可以在與光闌以同樣的位 置具有截止無用入射光線的光線截止閥。 15 爲了高性能化，較佳地，該攝影透鏡在第一透鏡組 G1、第二透鏡組G2、及第三透鏡組G3的每個中至少在一 面使用非球面。 在該攝影透鏡中，第一透鏡組G1作爲整體在光軸附近 具有正的光焦度。第一透鏡組G1的最靠近物側的面在光軸 20附近設爲凸面。該第一透鏡組G1例如能夠由光軸附近的形 狀爲將凸面朝向物側的正彎月形狀的！片第—透鏡li構 成。 該第一透鏡組G1還如圖4所示的第4結構例，也可以設 爲從物側依次由例如雙凸形狀的正透鏡L丨丨和例如雙凹形 M364864 狀的負透鏡L12構成的黏合透鏡（也稱接合透鏡）的結構。 : 而且，如圖6、圖7所示的第六、第七結構例，可以將 ·. 第一透鏡組G1设爲複合非球面透鏡的結構。複合非球面透 鏡例如使用WLC ( wafer-level camera :晶圓級相機）技術 5形成。在圖6、圖7的結構例中’第一透鏡組G1由平行平面 透鏡（透鏡基板）Lib、在該透鏡基板Lib的一面側（物側） 透過樹脂材料形成的物侧非球面透鏡部Lla、在該透鏡基 板Lib的另一面侧（像側）透過樹脂材料形成的像側非球 ® 面透鏡部L1 c構成。由這些透鏡基板L1 b '物側非球面透鏡 10部Lla及像側非球面透鏡部Llc作爲整體構成一個複合非 球面透鏡。物側非球面透鏡部Lla的物側的面在光軸附近 設爲凸面。像側非球面透鏡部Llc的像側的面在光軸附近 例如設爲凹面。 另外’透鏡基板Lib和物側非球面透鏡部Lla的黏接、 I5及透鏡基板L1 b和像側非球面透鏡部l 1 c的黏接可以使用 黏接材料（透過黏接材料）黏接’但也可以不使用黏接材 • 料、僅簡單地使鄰接的透鏡面直接貼緊黏接。而且，在鄰 接、相對的透鏡面也可以施加反射防止膜等的塗層處理的 基礎上黏接。 -20 而且’設爲複合非球面透鏡以外的結構時，第一透鏡 組G1可以由玻璃透鏡構成。透過將最靠近物側的第一透鏡 組G1設爲玻璃透鏡，例如有利於在高溫高濕環境下的使用 、 等。 第二透鏡組G2作爲整體設爲在光軸附近的形狀是將 M364864 凹面朝向物側的彎月形狀。較佳地，第二透鏡組的最靠 ， 近物側的面爲周邊部比第二透鏡組G2的最靠近物側的自 頂點位置更罪物側的形狀。關於第二透鏡部⑺的最靠近像 — 側的面也較佳疋周邊部比第二透鏡組G2的最靠近像側的 · 5面頂點位置更罪物側的形狀。第二透鏡組⑺例如能夠由光 軸附近的形狀爲將凹面朝向物側的彎月形狀的一片第二透 鏡L2構成。 而且’與上述的第一透鏡組G1的情況同樣地，可以將 第透鏡組G2叹爲複合非球面透鏡的結構。在本實施方< φ 10中’在圖6至圖8所示的第六至第八的結構例中第二透鏡 組G2成爲複合非球面透鏡。在圖6至圖8的結構例中，第二 透鏡組G2由平行平面透鏡（透鏡基板）—、在該透鏡基 板L2b的一面側（物側）透過樹脂材料形成的物侧非球面 透鏡部L2a、在該透鏡基板L2b的另一面侧（像側）透過樹 脂材料形成的像側非球面透鏡部L2c構成。由這些透鏡基 板L2b、物側非球面透鏡部L2a及像側非球面透鏡部 成整體上在光軸附近爲將凹面朝向物側的f月形狀的一個 複合非球面透鏡。 · 第三透鏡組G3尤其對像面f曲校正是有效的透鏡 :〇組，最靠近物側的面在光軸附近設爲凸面。第三透鏡組⑺ 還具有最靠近物側的面或最靠近像側的面在周邊部和㈣ * 點位置之間（面的中間部）朝向像側爲凸形狀的形狀部分。 ：Dig: total of the center thicknesses of the lenses in the first lens group D3g: total of the center thicknesses of the lenses in the third lens group R1: the paraxial curvature of the lens faces closest to the object side of the first lens group half f2: The paraxial focal length of the two lens group M364864 f 3 : the paraxial focal length of the third lens group ^d2g. the Abbe number of the lens having the thickest central thickness in the second lens group, DL: the closest from the first lens group a distance N1 from the apex of the lens side of the object side to the optical axis of the apex of the lens face closest to the image side of the third lens group: the refractive index of the lens having the thickest center thickness in the first lens group: the first lens group Paraxial focal length. Moreover, in the photographic lens of the three-group structure of the present creation, the first lens group may be composed of a glass lens. By using the first lens group 1 which is closest to the object side as a glass lens, it is advantageous for use in, for example, a high-temperature and high-humidity environment. Further, in the photographic lens of the three-group structure of the present invention, at least one of the first lens group, the second lens group, or the third lens group may be a composite aspheric lens. Further, the composite aspherical lens may be a flat-shaped 15-lens substrate, an object-side aspherical surface-forming portion formed on the object side of the lens substrate, and an image-side aspherical lens formed on the image side of the lens substrate. The difference between the Abbe number of the lens substrate and the object-side aspherical lens portion and the Abbe number of the lens substrate and the image-side aspherical lens portion are respectively assumed to be Abbe's number differences satisfying the following conditional expression (14). Δ The difference in the Abbe number of the sample), the difference between the refractive index of the lens substrate and the object-side aspherical lens portion, and the difference between the refractive indices of the lens substrate and the image-side aspherical lens portion are respectively satisfied as follows: The refractive index difference of formula (15) (the difference in refractive index with respect to d line). ΙΔ 2^ 10 ...... ( Η) ΙΔΝΙ^Ο.1 .····. ( 15) M364864 And 'in the three sets of photographic lenses of this creation, you can also have two light, at this time, Preferably, the position where the light is idle on the optical axis is higher than the position on the first == side; more preferably 'as it is in the light 5 15 lens! The position of the center of gravity is further on the object side and is more image side than the surface vertex position on the object side closest to the lens group. The photographic device created has: a photographic element based on the photographic signal of the present invention. The first image of the film is obtained from the photographic device according to the creation, and the photographic lens based on the three sets of structures of the present creation can be obtained based on the still-resolved optical image obtained by the photographic brother of the present creation. In the lens group with less ^^, the aspheric surface is effectively used at the same time: the satisfaction is good for ensuring the shortening of the total length and the brightness reading: the overall optimization of the structure, so the compactness and low cost I: Achieving brighter and higher imaging performance than in the past. Moreover, according to the photographic apparatus of the present invention, the _ image corresponding to the optical image formed by the upper-layer high-performance structure lens is output, so that it can be bright based on the photographic signal High-resolution photographing 20 [Embodiment] The following description of the embodiment of the present invention will be described in detail with reference to the drawings. Fig. 1 shows an example of the configuration of an imaging lens according to an embodiment of the present invention. A numerical embodiment of the lens structure of Fig. 29). Similarly, the second to fourteenth numerical embodiments of the pair of 25 M364864 are shown in Figs. 2 to 14 (Figs. 16 to 28). 3A to 42) The cross-sectional structure of the second to fourteenth structural examples of the lens structure of J. In Figs. j to 14, the symbol Ri represents the face of the lens factor closest to the object side as the i-th The radius of curvature of the i-th face of the symbol is added as the image side (imaging side) is sequentially increased. The symbol Di indicates the face interval on the optical axis Z1 of the second face and the i+1th face. The basic configuration of each configuration example is the same. Therefore, the configuration example of the imaging lens shown in FIG. 1 will be mainly described below, and the configuration examples of FIGS. 2 to 14 will be described as needed. The photographic lens is suitable for use in various photographic apparatuses using photographic elements such as 戋10 CMOS, especially relatively small portable terminal devices such as digital still cameras, mobile phones with cameras, PDAs, etc. The photographic lens is along the optical axis 21 The first lens unit G1, the second lens group G2, and the third lens group are provided in this order. The imaging device according to the present embodiment includes the 15 imaging lenses according to the present embodiment and the light that is output and transmitted through the imaging lens. The imaging element (10) is equipped with an imaging element such as a CCD corresponding to the photographic number, and the imaging element (10) is placed on the imaging surface (photographing surface) of the photographic lens. Between the third lens group (10) and the 70-100 unit 100 'A variety of optical components CG can be arranged according to the structure of the camera side on which the lens is attached. For example, a flat-shaped optical component such as a cover for protective surface protection-20 or an infrared cut-off ray can be disposed. For the member (3), for example, an optical member in which a coating having a light-passing effect such as an infrared cut-off light-passing sheet or an ND filter is applied to a flat lid can be used. There is a stop St. The stop St M364864 is an optical aperture stop (brightness stop), preferably disposed before and after the first lens group G1. For example, it is preferable that the stop St is set to a so-called "front side diaphragm" such that the position on the optical axis Z1 is disposed on the object side more than the center of gravity of the first lens group gi. More preferably, the position on the optical axis 21 may be disposed closer to the object side than the position of the center of gravity of the first lens group G1, and more like the position of the apex of the lens surface on the closest object side of the first lens group G1. side. In the present embodiment, the lenses (Figs. 1 to 8) of the first to eighth configuration examples are configuration examples corresponding to the front side diaphragm. Further, the stop St can be disposed in a structure of a so-called "medium light" between the first lens group (}1 and the second lens group 10G2. In the present embodiment, the configuration examples of the ninth to fourteenthth The lens (Figs. 9 to 14) is a configuration example corresponding to the intermediate diaphragm. Further, as the light confinement mechanism, a light cutoff valve that cuts off unnecessary incident light may be provided at the same position as the diaphragm. Preferably, the photographic lens uses an aspherical surface on at least one side of each of the first lens group G1, the second lens group G2, and the third lens group G3. In the photographic lens, the first lens group G1 as a whole The positive lens has a positive refractive power in the vicinity of the optical axis. The surface of the first lens group G1 closest to the object side is convex in the vicinity of the optical axis 20. The first lens group G1 can be oriented, for example, by a shape near the optical axis. The first lens group G1 is also configured as a fourth configuration example shown in FIG. 4, and may be a positive lens such as a biconvex shape in order from the object side. L丨丨 and a negative lens L12 such as a double concave M364864 shape The structure of the bonded lens (also referred to as a cemented lens): Further, as shown in the sixth and seventh structural examples shown in Figs. 6 and 7, the first lens group G1 can be configured as a composite aspherical lens. The composite aspherical lens is formed using, for example, a WLC (wafer-level camera) technology 5. In the configuration examples of FIGS. 6 and 7, the first lens group G1 is a parallel plane lens (lens substrate) Lib, and An object side aspherical lens portion L1a that is formed of a resin material on one surface side (object side) of the lens substrate Lib, and an image side aspherical lens portion L1 that is formed of a resin material on the other surface side (image side) of the lens substrate Lib The lens substrate L1 b 'the object side aspherical lens 10 portion Lla and the image side aspheric lens portion L1 as a whole constitute one composite aspherical lens. The object side surface of the object side aspherical lens portion L1a is on the optical axis. The image side surface of the image side aspherical lens portion Lc is, for example, a concave surface in the vicinity of the optical axis. Further, the adhesion of the lens substrate Lib and the object side aspherical lens portion L1a, I5, and the lens substrate L1 b and Image side aspheric lens part l 1 The bonding of c can be adhered by using a bonding material (through the bonding material), but it is also possible to simply adhere the adjacent lens surfaces directly to the bonding without using the bonding material. Moreover, in the adjacent and opposite The lens surface may be adhered to a coating treatment such as an anti-reflection film. -20 Further, when the structure is other than the composite aspherical lens, the first lens group G1 may be composed of a glass lens. The first lens group G1 on the side is a glass lens, for example, it is advantageous for use in a high-temperature and high-humidity environment, etc. The second lens group G2 as a whole has a shape in the vicinity of the optical axis, which is a curved surface of the M364864 concave side toward the object side. Moon shape. Preferably, the most proximal surface on the near side of the second lens group has a shape in which the peripheral portion is more on the object side than the position on the object side closest to the object side of the second lens group G2. It is preferable that the surface of the second lens portion (7) closest to the image side has a shape in which the peripheral portion is more on the object side than the fifth surface vertex position on the image side closest to the second lens group G2. The second lens group (7) can be constituted, for example, by a second lens L2 having a shape of a meniscus having a concave surface facing the object side in the vicinity of the optical axis. Further, as in the case of the first lens group G1 described above, the first lens group G2 can be sinned as a composite aspherical lens. In the present embodiment < φ 10 ' in the sixth to eighth configuration examples shown in Figs. 6 to 8, the second lens group G2 serves as a composite aspherical lens. In the configuration example of FIG. 6 to FIG. 8 , the second lens group G2 is a parallel-plane lens (lens substrate)—the object-side aspherical lens portion L2a formed by transmitting a resin material on one surface side (object side) of the lens substrate L2b. The other surface side (image side) of the lens substrate L2b is configured to pass through the image side aspherical lens portion L2c formed of a resin material. The lens substrate L2b, the object-side aspherical lens portion L2a, and the image-side aspherical lens portion are a composite aspherical lens having a f-shaped shape with the concave surface facing the object side as a whole in the vicinity of the optical axis. The third lens group G3 is particularly effective for correcting the image plane f: the 〇 group, and the surface closest to the object side is convex near the optical axis. The third lens group (7) further has a surface portion closest to the object side or a surface portion closest to the image side, and a shape portion having a convex shape toward the image side between the peripheral portion and the (four)* point position (the intermediate portion of the surface). :
第三透鏡組G3例如能夠由光軸附近的形狀爲將凸面朝向 物側的彎月形狀的一片第三透鏡L3構成。 J 12 M364864 而且，與上述的第一透鏡組G1的情況同樣地，也可以 ； 將第三透鏡組G3設爲複合非球面透鏡的結構。在本實施方 一 式中，在圖6至圖8所示的第六至第八的結構例中，第三透 鏡組G3成爲複合非球面透鏡。在圖6至圖8的結構例中，第 5三透鏡組G3由平行平面透鏡（透鏡基板）L3b、在該透鏡 基板L3b的一面侧（物側）透過樹脂材料形成的物側非球 面透鏡部L3a、在該透鏡基板L3b的另一面側（像側）透過 樹脂材料形成的像侧非球面透鏡部L3c構成。由這些透鏡 籲 基板L3b、物側非球面透鏡部L3a及像側非球面透鏡部L3c 10構成整體上在光軸附近的形狀爲將凸面朝向物侧的彎月形 狀的1個複合非球面透鏡構成。 較佳地，該攝影透鏡至少滿足以下條件式（丨）〜（2 )。 0.19SCA/TLS0.6 ...... (1) 0.5^ D12a/f^ 1.2 ...... ( 2 ) 15 1.2^ TL/f^ 1.7 ...... ( 3) BF/TL ^ 0.35 ...... ( 4 ) φ 此處， CA :入曈直徑（直徑） TL :總長（從最靠近物侧的透鏡面到像面的光軸上距 20離。比第三透鏡組G3更靠像面側爲空氣換算長度） ： BF:後截距（從第三透鏡組G3的最靠近像側的透鏡面 頂點到像面的光軸上的距離（空氣換算長度）） D12a.從第一透鏡組g 1的最靠近物側的透鏡面到第二 透鏡組G2的最靠近像側的透鏡面的光軸上距離 13 M364864 f:整體的近軸焦距 較佳地，該攝影透鏡還適當選擇地滿足以下條件。 D3g/f3<0.65 ...... ( ί >) 0.7^ f/YIM< 4.0 .. .(6) 5 0.20^ Dlg/fl< 0.75 . "…(7) 0.45^ Rl/f< 1.0 ...... (8) —0.5S f2/f3 ( 45- v d2g) ^ 0.03SBF/DL 幺 0.5 ... 1.6<N1 ……(11) ...(l〇) 10 0.5^ f/fl< 1.05 ...... (12) 0.24^ Dlg/f< 0.9 .... .· ( 13) 此處， YIM :最大像高 Π :第一透鏡組G1的近軸焦距 15 D1g :第一透鏡組G1内的透鏡的中心厚度的合計 D3g :第三透鏡組G3内的透鏡的中心厚度的合計 R1:第一透鏡組G1的最靠近物側的面的近軸曲率半徑 f2:第二透鏡組G2的近軸焦距 f3 :第三透鏡組G3的近軸焦距 20 ^d2g:在第二透鏡組G2内中心厚度最厚的透鏡的阿 貝數 DL :從第一透鏡組⑴的最靠近物側的透鏡面頂點到 第三透鏡組G3的最靠近像側的透鏡面頂點的光軸上的距 離（參照圖1 ) M364864 N1:在第一透鏡組G1内中心厚度最厚的透鏡的折射率 fl :第一透鏡組G1的近軸焦距 而且，如圖6至圖8的結構例，在第一透鏡組(}1、第二 透鏡組G2、或第三透鏡組G3中至少一個組爲複合非球面= 5鏡時，關於各組的複合非球面透鏡，較佳地，在複合非球 面透鏡内鄰接的透鏡間的阿貝數差設爲滿足以下條件式 (14)的阿貝數差(對d線的阿貝數差），並且在複合 非球面透鏡内鄰接的透鏡間的折射率差設爲滿足以下條^ 式（15)的折射率差ΔΝ (對d線的折射率差）^例如，如 10圖6、圖7所示的結構例，第一透鏡組⑴爲複合非球面透鏡 時，較佳地，透鏡基板Llb和物側非球面透鏡部[la的阿貝 數之差、及透鏡基板Lib和像側非球面透鏡部Llc的阿貝數 之差分別設爲滿足以下條件式（14)的阿貝數差，'透 鏡基板Lib和物側非球面透鏡部Lla的折射率之差、及透鏡 Μ基板Lib和像側非球面透鏡部Llc的折射率之差分別設^ 滿足以下條件式（15)的折射率差Λν。 ΙΔ ^ 1〇 ...... ( η) IANI^O.i ……(15) 接著，更加詳細地說明有關如以上構成的攝影透鏡的 20作用及效果，尤其關於條件式的作用及效果。 在本實施方式相關的攝影透鏡中，透過由整體上三組 結構的比較少的透鏡組構成，從而可以謀求緊泰化聽成 本化。而且，透過謀求各透鏡組的結構的最佳化，從而抑 制總長的同時，可得到與過去相比明亮且高成像性能。尤 15 M364864 地使用非球面將有利於像面校正的最靠近像側 場角及亮度。而且，透趟二而有利於確保寬視 又而且透過滿足有利於確保總長的缩 度的條件式⑴〜（4)算掘定们縮短和冗 5 15 20 且唯拉古士 ％ #條件式’從而抑制總長 維持阿成像性能的同時，韻與過去相比充分的亮产。 =非球面形狀，尤其將第三透鏡組⑺構成得具有在 狀的开1面頂點位置之間（面的中間部）朝向像側爲凸形 像面蠻曲部分，從而從像面的中心部至周邊部良好地校正 =面臂曲。在第三透鏡_中，與第一透鏡組⑴和第二透 =2相比，按每視場角光束分離。由此，尤其將接近於 w兀件100的透鏡面的第三透鏡組⑺的最靠近像側的面 /成爲從光軸附近至周邊部成爲不同的凹凸形狀，從而使 按每視場角的像差校正適當，光束對攝影元件⑽的入射角 :限制在一定角度以下（良好地保持各視場角的主光線的 、〜性）。從而’可以減少成像面整個區域的光量不均勻 的同時，有利於像面彎曲或畸變像差等的校正。而且，在 =攝影透鏡中，透過將第二透鏡組G2及第三透鏡組G3雙方 設爲非球面透鏡，從而與由球面透鏡構成的情況相比，在 維持同等的光學性能的狀態下可以使總長設小。更具體 地，右第二透鏡組G2及第三透鏡組⑺由球面透鏡構成，並 且分辨性能良好，在攝影面的各視場角的主光線的遠心性 保持良好，則在使用非球面透鏡的情況，在總長縮小3〇% 以上的狀態下可以實現與其同等的性能。 叙’在攝影透鏡系統十，較佳地，遠心性，即主光 16 M364864 線對攝影元件H)0的人射角度相對光軸接近於平行（攝奢面 : 以射角度相對攝影面的法線接近於零）。爲了確保対 ； 心、性’較佳地，光闌_量配置在物側、第-透鏡組⑴的 前後。另-方面，若光闌St配置在從最靠近物侧的透鏡面 5向物側方向更遠離的位置，因爲這部分（光閣帥最靠近 ，側的透鏡面的距離）作爲光路長（也稱光程長）會被加 鼻，所以在整體結構的緊湊性方面變得不利。從而，透過 例如使光闌st配置在光軸Z1上的位置比第一透鏡組⑴的 重心位置更靠物側、且比第一透鏡組G1的最靠近物側的面 10頂點位置更靠像側的位置，從而謀求總長的縮短的同時， 可以確保遠心性。 而且，在該攝影透鏡中，從物側入射的光由第一透鏡 組G1的像側的面向物側方向反射、進一步由第一透鏡組g i 的物側的面反射而到達像面的重影光得以發生的憂慮存 I5在。透過將光闌St配置在比第一透鏡組gi的重心位置更靠 物側’有利於抑制這種重影光的發生。 # 此外，將光闌St配置在第一透鏡組G1和第二透鏡組 之間時’第一透鏡組G1和第二透鏡組G2的有效區域變小， 從而面的光焦度變小，一般基於製造偏差的性能變化小。 20而且，第一透鏡組G1和第二透鏡組G2接近於光闌，所以可 以良好地保持球面像差，對於明亮的透鏡而言是有利的。 • 而且，對於高級透鏡，將第一透鏡組G1配置得反而比光闌 、 St更靠物側而使用戶從外觀上可意識到透鏡的外觀上的優 點也存在。 17 M364864 以下’對上述的各條件式的具體意義進行說明。 條件式（1)規定入瞳直徑CA的適當的值。光闌以在 第一透鏡組G1的最靠近物側的面位置的附近時，入瞳直徑 CA規定轴上光線的有效直徑。若低於條件式（1)的下限， 5則入瞳直徑CA變得過小，透鏡系統變暗。若超過上限，則 入曈直徑CA變得過大，分辨性能等各種性能變得不充分。 爲了得到更良好的性能，較佳地，條件式（丨）的數 值範圍爲： 0.22^ CA/TL^ 0.5 ...... ( 1，） 10 也可更佳爲： 0.28$ CA/TLS 0.5 ...... (1，，） 條件式（2)關於從第一透鏡組的最靠近物侧的面到 第二透鏡組的最靠近像側的面的光軸上距離Dl2a。在該攝 影透鏡中，球面像差從第一透鏡組G1至第二透鏡組^之變 低，在第三透鏡組（}3變高，並且作爲整體保持球面像差的 均衡，但若低於條件式（2)下限，則不能使球面像差充分 地設低。而且，在該攝影透鏡中，使入射的光線從第一透 鏡組G1至第二透鏡組G2按每視場角進行光束分離透過在 第三透鏡組G3按每視場角校正該分離的光束，從而按每視 場角良好地校正像面彎曲。若低於條件式（2)的下限，則 從第一透鏡組G1至第二透鏡組（^分離光束的現象變得不 充刀並且在第二透鏡組G3的像面彎曲校正也變得不充 分。若低於第三透鏡組G3的下限，則第一透鏡組⑴及第二 透鏡組G2的周邊部的透鏡厚度或第一透鏡組⑴及第二透 18 M364864 鏡組G2的空氣間隔變小，加工上變得 j。另—方面，若 超過條件式（2 )的上限，則球面像差從n ^ 界左攸弟—透鏡組G1至 第二透鏡組G2變得過於低。而且，減小像面f曲的同時， 減小總長逐漸變得困難。 爲了得到更良好的性能，較佳地，條件 值範圍爲： 数 0.65 ^ D12a/f^ 1.0 ...... ( 2,） 也可更佳爲： 鲁 0.70^ D12a/fS 1.0 ...... (2，，） 1〇 冑件式（3)關於透鏡系統的總長TL。若超過條件式 ?)的上限’則總長TL變得過大利於總長⑽縮短。 若低於下限，财利於總長TL的縮短，但導致成像性能的 低下。如本實施方式相關的攝影透鏡F數小、明亮的透鏡 的情況，有分辨深度變狹窄的現象、和透過軸上光線的有 B效區域的增大而使球面像差和周邊像高的像面彎曲均衡一 致地備齊的J見象變得困難。因此，冑了使拍兹伐（MW) • 料衡設爲良好，有必要將總長設爲適當的值。若總長過 大，則視場角和對像面的射出角度與現狀的一般的F數的 透鏡相比變得過於鈍角。 -2〇 條件式（4)關於後截距BF和透鏡系統的總長tl。如 . 本實施方式相關的攝影透鏡那樣，若在F數小、明亮的透 鏡中將光闌St設爲比較前側、而且想要謀求總長的縮短， 、 則球面像差主要在第一透鏡組G1可以設小。另一方面，就 倍率色像差、像面彎曲校正、及非點差異（格差）校正而 19 M364864 言，將具有變曲點（也稱拐點）的非球面配置在最終透鏡 (第三透鏡組G3 )是最有效的。而且，該非球面的位置在 從光闌St遠離配置時越遠離就越發揮效果。將最終透鏡的 非球面從光闌St遠離配置的結果，存在後截距bf變小的傾 5向。另外，就明党的透鏡而言，各像高的光線有效直徑變 大’所以從外觀品質、塵埃異物痕的規格的觀點來看，也 沒有必要使後截距BF擴大。由此，以性能爲優先在後截距 BF比較變小的位置可以配置最終透鏡。若脫離條件式（4) 的上限，則可將後截距017設長，但導致由上述最終透鏡的 10 校正效果的低下。 爲了得到更良好的性能，較佳地’條件式（4 )的數 值範圍爲： BF/TL^ 0.18 ...... ( 4,） 也可更佳爲： 15 BF/TL^ 0.12 ...... ( 4,?) 條件式（5 )規疋第二透鏡組G3的近軸焦距门和第三 透鏡組G3内的透鏡的合計中心厚度叫的適當的關係。在 正弋（5 )中，D3g/f3成爲負的值時，有利於像面彎曲校 肋^、站兹伐的校正。D3g/f3成爲正的值時，若超過條件式 的上限且D3g/f3的值變得過於寬，則難以進行像面的 体杜？件式（6 )關於最大像高YIM。在該攝影透鏡中，在 條件2 6)的條件下，可實現明亮且高成像性能。若低於 工6)的下限，則視場角變得過大。若超過條件式（6) M364864 的上限’則視場角變得過於狹小。 爲了得到更良好的性能，較佳地 值範圍爲： 條件式U)的數 f/YIM^3.5 ……（6，） 5 15 20 也可更佳爲： 1.4^f/YIM^3.0 ……（6，，） ，件式⑺規定第-透鏡組⑴的近軸焦距n和第一 透鏡組⑴内的透鏡的合計中心厚度Dlg的適當的關係。若 低於條件式⑺的下限，則在該攝影透鏡中第一透鏡组 二=二直徑大，因此不能充分確保第一透鏡組G1内的透 : = 分的厚度。若超過條件式(7)的上限，則不能 值範圍爲爲了得到更良好的性能，較佳地，條件式⑺的數 0.25 ^ Dlg/fl ^ 〇.6〇 ...... (7ι) 也可更佳爲： 0.28$ Dlg/fl $ 0.55 ...... (7") 條件式⑴關於第—透鏡組⑴的最靠近物側的面的 低於條件式（8)的下限，則存在球面像差及像面 : 件過於低的傾向。而且，畸變像差變得過於高，不 能進行透過非球面等的充分的校正。若超過條件式⑷的 上限’則球面像差及像面彎曲變得過於高，而且，存在畸 變像差變得過於低的傾向。並且，相對於總長也變得有利。 爲了得到更良好的性能，較佳地’條件式⑷的數 21 M364864 值範圍爲： 條件式（9)關於第_ 透鏡的阿貝數“2g。若:離停：=厚度最料 同時良好地保持像面彎曲和倍率色像差）。的範圍，則不簾 值範圍爲爲了得到更良好的性能，較佳地，條件式（9)的彰 -〇.2^f2/f3(45-,d2g) ..... (9，） 也可更佳爲： 1〇 -〇-^f2/f3(45~,d2g) ...... (9，，） 條件式（10)關於後截距BF和透鏡系統的厚度DL。 爲了滿足縮短透鏡總長、使最接近於攝影元件100的最终透 鏡面不過於接近攝影面這二個要求，需要將透鏡系統的厚 度DL和後截距BF設爲適當的範圍。若低於條件式的 I5下限，則後截距BF變得過小。若超過上限，則透鏡整體的 厚度DL變得過小，則引起像差性能的惡化及製造組裝靈敏 度的急速的降低。若在該攝影透鏡中增多非球面的面數， 則對製造時的偏差的性能惡化的靈敏度變大。若過於縮小 厚度DL’則爲了得到各透鏡要素的成型條件的偏差或組裝 20時的更良好的性能’較佳地，條件式（10)的數值範圍爲： 0.05^ BF/DL^ 0.42 ...... (10，） 也可更佳爲： 0.10S BF/DL^ 0.35 ...... ( 10，，） 條件式（11)關於在第一透鏡組G1内中心厚度最厚的 22 M364864 透鏡的折射率N1。若低於條件式（11)的下限，則不能維 持第一透鏡組G1内的在透鏡的周邊部的透鏡厚度，在加工 時發生欠缺等，或者在研磨時不能研磨。 爲了得到更良好的性能，較佳地，條件式（n)的數 5值範圍爲： 1.75 ^ N1 ^ 2.50 ...... (11’） 右超過該上限，則用現狀存在的光學材料高價的材料 較多，所以在成本方面變得不利。也可更佳爲： 1.79$Ν1$2·15 ···…（11，，） 1〇 條件式（12)關於第一透鏡組G1的焦距fi。若低於條 件式（12)的下限，則第一透鏡組⑴的光焦度變得過小， 不利=寬視場角化。若超過上限，則第一透鏡組⑴的光焦 度變得過大’不利於在周邊視場角的慧形像差、倍率色像 差、及像面差異的校正。 15 冑了得到更良好的性能，較佳地，條件式（12)的數 值範圍爲： 0.5^ f/fl ^ ! 〇 ...... ( 12,） 也可更佳爲： 〇·5$ f/fl ^0.95 ...... (12，，） 2〇 條件式（13)規定整體的近軸焦距f和第一透鏡組G1 内的透鏡的合計中心厚度Dlg的適當的關係。若低於條件 式（13 )的下限，則在該攝影透鏡中第一透鏡組的有效 直仏大所以不忐充分確保第一透鏡組G1内的透鏡的緣的 P 77的厚度若超過上限，則不能適當地維持後截距的同 23 M364864 時’不能使總長設小。 爲了得到更良好的性能，較佳地，條件式（13)的數 值範圍爲： 0.35 ^ Dlg/f^ 0.7 ...... ( 13,） 5 條件式（14) 、（ 15)規定如圖6至圖8的結構例使用 複合非球面透鏡時的'在該複合非球面透鏡内的鄰接的透 鏡間的適當的阿貝數差八^和折射率差Δν。使在複合非 球面透鏡内的透鏡結構以滿足條件式（14) 、（15)的方 式透過由阿貝數差和折射率差ΛΝ小且儘量由均質的 10材料構成，從而能夠減少在鄰接的透鏡間的境界面的光線 反射。 如以上說明’根據本實施方式相關的攝影透鏡，作爲 整體的二組結構的比較少的透鏡組中，有效地使用非球面 的同時’滿足有利於確保總長的縮短和亮度的規定條件而 15進行透鏡結構的整體的最佳化，所以謀求緊湊化及低成本 化的同時’可實現與過去相比明亮且高成像性能。而且， 透過滿足適當較佳的條件，從而製造適應性良好，可實現 更南成像性能。此外，根據本實施方式相關的攝影裝置， 由於使得輸出與透過本實施方式相關的高性能的攝影透鏡 20形成的光學像對應的攝影信號，所以可得到明亮且高分辨 的攝影圖像。 [實施例] 接著’對本實施方式相關的攝影透鏡的具體的數值實 知例進行說明。在以下，總結多個數值實施例進行說明。 24 M364864 圖15及圖29表示對應於圖1所示的攝影透鏡的結構的 具體透鏡數據。尤其在圖15表示該基本的透鏡數據，在圖 • 29表示關於非球面的數據。在圖15所示的透鏡數據的面號 碼S i的欄表示：關於實施例丨相關的攝影透鏡將最靠近物側 5的透鏡要素的面作爲第1個而隨著朝向像側依次增加所附 上符號的第i個面的號碼。在曲率半徑R i的欄表示對應於在 圖1中附加的符號Ri而從物側第i個面的曲率半徑的值 (mm)。關於面間隔Di的攔也同樣表示從物側第i個面以 和第1+1個面Si+1的光軸上的間隔（mm )。在Ndj攔表示從 10物側第j個光學因素對d線（ 587.6nm)的折射率的值，在N (945 )』的欄表示對近紅外區域的波長（94511111)的折射 率的值。在vdj攔表示從物側第j個光學因素對d線的阿貝數 的值。在圖15的攔外作爲各種數據表示整個系統的焦距f (mm )的值。 15 該實施例1相關的攝影透鏡，第二透鏡組G2及第三透 鏡組G3的兩面均成爲非球面形狀。第一透鏡組⑴成爲球 _ 面。在圖15的基本透鏡數據，作爲該些非球面的曲率半徑 表示有光軸附近的曲率半徑（近軸曲率半徑）的數值。 在圖29表示實施例1的攝影透鏡的非球面數據。在作 20爲非球面數據所示的數值中，記號“E”表示其之後的數 值是以10爲底的“冪指數，，，表示由該以1〇爲底的指數函 數所表示的數值與“E”之前的數值相乘。例如，若爲 1.0E-02 ’ 則表示 “ι.〇χ1〇-2” 。 作爲非球面數據，記下根據以下式（Α)所表示的非 25 M364864 球面形狀的式中的各係數Ai、κ的值。詳而言之，z表示距 光軸咼度爲h的位置的非球面上的點下垂到非球面頂點的 切平面（垂直於光軸的平面）的垂線長度（)。 Z=C-h2/{l+ ( 1- (K*C2*h2) I/2}+lAi*hi ...... (A) 5 此處， Z :非球面的深度（mm ) h :從光軸到透鏡面的距離（高度）（mm ) K :離心率The third lens group G3 can be constituted, for example, by a third lens L3 having a shape of a meniscus having a convex surface facing the object side in the vicinity of the optical axis. J 12 M364864 Further, similarly to the case of the first lens group G1 described above, the third lens group G3 may be configured as a composite aspherical lens. In the present embodiment, in the sixth to eighth configuration examples shown in Figs. 6 to 8, the third lens group G3 serves as a composite aspherical lens. In the configuration example of FIG. 6 to FIG. 8 , the fifth triangular lens group G3 is a parallel-plane lens (lens substrate) L3b, and an object-side aspherical lens portion formed by a resin material on one surface side (object side) of the lens substrate L3b. L3a is formed on the other surface side (image side) of the lens substrate L3b by an image side aspherical lens portion L3c formed of a resin material. The lens substrate L3b, the object-side aspherical lens portion L3a, and the image-side aspherical lens portion L3c10 constitute a composite aspherical lens having a meniscus shape with a convex surface facing the object side as a whole in the vicinity of the optical axis. . Preferably, the photographic lens satisfies at least the following conditional formulas (丨)~(2). 0.19SCA/TLS0.6 ...... (1) 0.5^ D12a/f^ 1.2 ...... ( 2 ) 15 1.2^ TL/f^ 1.7 ...... (3) BF/ TL ^ 0.35 ...... ( 4 ) φ where, CA : diameter of the entrance pupil (diameter) TL : total length (from the lens surface closest to the object side to the optical axis of the image plane is 20 degrees away from the third. The lens group G3 is further in the air-converted length on the image side): BF: back intercept (distance from the apex of the lens surface closest to the image side of the third lens group G3 to the optical axis of the image plane (air conversion length)) D12a. The distance from the lens surface closest to the object side of the first lens group g1 to the lens surface closest to the image side of the second lens group G2 is 13 M364864 f: the overall paraxial focal length preferably, The photographic lens also appropriately satisfies the following conditions. D3g/f3<0.65 ...... ( ί >) 0.7^ f/YIM< 4.0 .. .(6) 5 0.20^ Dlg/fl< 0.75 . "...(7) 0.45^ Rl/f< 1.0 ...... (8) —0.5S f2/f3 ( 45- v d2g) ^ 0.03SBF/DL 幺0.5 ... 1.6<N1 ......(11) ...(l〇) 10 0.5 ^ f/fl< 1.05 ...... (12) 0.24^ Dlg/f< 0.9 .... . . ( 13) Here, YIM : maximum image height Π : paraxial focal length of the first lens group G1 15 D1g : total of the center thicknesses of the lenses in the first lens group G1 D3g : total of the center thicknesses of the lenses in the third lens group G3 : the paraxial radius of curvature of the face closest to the object side of the first lens group G1 F2: paraxial focal length f3 of the second lens group G2: paraxial focal length of the third lens group G3 20 ^d2g: Abbe number DL of the lens having the thickest central thickness in the second lens group G2: from the first lens group The distance from the apex of the lens surface closest to the object side of (1) to the optical axis of the apex of the lens surface closest to the image side of the third lens group G3 (refer to FIG. 1) M364864 N1: The thickness of the center is the thickest in the first lens group G1 The refractive index fl of the lens: the paraxial focal length of the first lens group G1 and, as in the structural example of FIGS. 6 to 8, When at least one of a lens group (1, a second lens group G2, or a third lens group G3 is a composite aspheric surface = 5 mirrors, with respect to each group of composite aspheric lenses, preferably, in a composite aspheric lens The Abbe number difference between the adjacent lenses is set to the Abbe number difference (Abbe number difference to the d line) satisfying the following conditional expression (14), and the refractive index difference between adjacent lenses in the composite aspheric lens It is assumed that the refractive index difference ΔΝ (the refractive index difference with respect to the d line) of the following formula (15) is satisfied. For example, as shown in Fig. 6 and Fig. 7, the first lens group (1) is a composite aspheric lens. In the case where the difference between the Abbe number of the lens substrate L11 and the object-side aspherical lens portion [1a] and the Abbe number of the lens substrate Lib and the image-side aspherical lens portion Llc are preferably satisfied, the following conditional expressions are satisfied. The difference in the Abbe number of (14), the difference between the refractive indices of the lens substrate Lib and the object-side aspherical lens portion L1a, and the difference between the refractive indices of the lens pupil substrate Lib and the image-side aspherical lens portion Llc are respectively satisfied. The refractive index difference Λν of the conditional expression (15). ΙΔ ^ 1〇... ( η) IANI^Oi (15) Next, more For instructions finely photographic lens 20 is configured as described above functions and effects, and effects on particular conditional expressions. In the photographic lens according to the present embodiment, it is constituted by a lens group having a relatively small overall three-group structure, and it is possible to achieve a tighter Thai hearing. Further, by optimizing the structure of each lens group and suppressing the total length, it is possible to obtain brighter and higher imaging performance than in the past. The use of aspherical surfaces in the M 15864 will be the closest to the image side field angle and brightness. Moreover, it is advantageous to ensure wide-vision and also to satisfy the conditions (1) to (4) which are advantageous for ensuring the reduction of the total length, and to shorten and redundant 5 15 20 and only Ragus % #conditional' Therefore, while suppressing the total length to maintain the image performance, the rhyme is sufficiently brighter than in the past. = aspherical shape, in particular, the third lens group (7) is configured to have a convex portion on the image side between the vertex positions of the open one surface (the intermediate portion of the surface), so as to be from the central portion of the image plane Good correction to the peripheral part = face arm curvature. In the third lens _, the beam is separated by the angle of view per field of view as compared with the first lens group (1) and the second lens. Therefore, in particular, the surface closest to the image side of the third lens group (7) close to the lens surface of the w-piece 100 becomes a different concavo-convex shape from the vicinity of the optical axis to the peripheral portion, so that the per-view angle is obtained. The aberration correction is appropriate, and the incident angle of the light beam to the photographic element (10) is limited to a certain angle or less (good to maintain the principal ray of each angle of view). Therefore, it is possible to reduce the unevenness of the light amount over the entire area of the image forming surface, and to facilitate correction of the image plane curvature or the distortion aberration. Further, in the photographic lens, by providing both the second lens group G2 and the third lens group G3 as aspherical lenses, it is possible to maintain the same optical performance as compared with the case of the spherical lens. The total length is small. More specifically, the right second lens group G2 and the third lens group (7) are composed of a spherical lens, and the resolution performance is good, and the telecentricity of the chief ray at each angle of view of the photographic surface is kept good, and the aspherical lens is used. In the case, the performance equivalent to that of the total length is reduced by more than 3%. In the photographic lens system ten, preferably, the telecentricity, that is, the main light 16 M364864 line to the photographic element H) 0 the angle of the human eye is close to the parallel with respect to the optical axis (the luxury surface: the method of shooting angle relative to the photographic surface) The line is close to zero). In order to ensure 対; heart, property', it is preferable that the amount of pupil 配置 is disposed before and after the object side and the first lens group (1). On the other hand, if the stop St is disposed at a position farther away from the lens surface 5 closest to the object side toward the object side, since this portion (the distance closest to the lens surface of the side) is as the optical path length (also It is said that the optical path length is increased, so it is disadvantageous in terms of the compactness of the overall structure. Therefore, for example, the position where the stop st is disposed on the optical axis Z1 is closer to the object side than the center of gravity of the first lens group (1), and is more like the vertex position of the face 10 closest to the object side of the first lens group G1. The position of the side, in order to shorten the total length, can ensure telecentricity. Further, in the imaging lens, light incident from the object side is reflected by the object side direction of the image side of the first lens group G1, and further reflected by the object side surface of the first lens group gi to reach a ghost of the image plane. The worry that light can happen is I5. It is advantageous to suppress the occurrence of such ghost light by arranging the stop St on the object side of the center of gravity of the first lens group gi. Further, when the aperture St is disposed between the first lens group G1 and the second lens group, the effective areas of the first lens group G1 and the second lens group G2 become smaller, so that the power of the surface becomes smaller, generally The performance variation based on manufacturing deviation is small. Further, since the first lens group G1 and the second lens group G2 are close to the pupil, the spherical aberration can be favorably maintained, which is advantageous for a bright lens. • Moreover, for the advanced lens, the first lens group G1 is disposed on the object side rather than the pupil, St, so that the user can visually recognize the appearance of the lens. 17 M364864 The following is a description of the specific meaning of each of the above conditional expressions. The conditional expression (1) specifies an appropriate value of the inlet diameter CA. When the aperture is in the vicinity of the surface position of the first lens group G1 closest to the object side, the entrance diameter CA defines the effective diameter of the light on the axis. If it is lower than the lower limit of the conditional expression (1), the entrance pupil diameter CA becomes too small, and the lens system becomes dark. When the upper limit is exceeded, the inlet diameter CA becomes excessively large, and various performances such as resolution performance become insufficient. In order to obtain better performance, preferably, the value range of the conditional formula ( 0.2) is: 0.22^ CA/TL^ 0.5 ...... (1) 10 may also be more preferably: 0.28$ CA/TLS 0.5 (1,) The conditional expression (2) relates to the optical axis upper distance Dl2a from the surface on the object side closest to the first lens group to the surface closest to the image side of the second lens group. In the photographic lens, the spherical aberration becomes lower from the first lens group G1 to the second lens group, and becomes higher in the third lens group (}3, and maintains the balance of the spherical aberration as a whole, but if it is lower than In the case of the lower limit of the conditional expression (2), the spherical aberration cannot be sufficiently set low. Further, in the photographic lens, the incident light is separated from the first lens group G1 to the second lens group G2 at each angle of view. By correcting the separated light beam at each angle of view in the third lens group G3, the field curvature is well corrected for each angle of view. If the lower limit of the conditional expression (2) is exceeded, the first lens group G1 is The second lens group (the phenomenon of splitting the light beam becomes unfilled and the curvature of curvature correction of the second lens group G3 also becomes insufficient. If it is lower than the lower limit of the third lens group G3, the first lens group (1) And the lens thickness of the peripheral portion of the second lens group G2 or the air gap between the first lens group (1) and the second lens 18 M364864 lens group G2 becomes smaller, and the processing becomes j. On the other hand, if the conditional expression (2) is exceeded The upper limit, the spherical aberration from n ^ bound left brother - lens group G1 to the second through The group G2 becomes too low. Moreover, while reducing the curvature of the image plane f, it is difficult to reduce the total length. In order to obtain better performance, preferably, the condition value range is: number 0.65 ^ D12a/f^ 1.0 ...... ( 2,) can also be better: Lu 0.70^ D12a/fS 1.0 ...... (2,,) 1 〇胄 式 (3) About the total length TL of the lens system. If the upper limit of the conditional formula ?) is exceeded, the total length TL becomes too large to shorten the total length (10). If it is lower than the lower limit, the profit is shortened by the total length TL, but the imaging performance is lowered. The number of photographic lenses F according to the present embodiment is small. In the case of a bright lens, there is a phenomenon in which the depth of the resolution is narrowed, and a phenomenon in which the B-effect region of the light transmitted through the axis increases, and the spherical aberration of the spherical aberration and the peripheral image height are uniformly balanced. It is difficult. Therefore, if the balance is set to good, it is necessary to set the total length to an appropriate value. If the total length is too large, the angle of view and the angle of incidence of the image surface are the same as the current situation. The F-number lens becomes too obtuse. -2〇 conditional expression (4) about the back intercept BF and the lens system In the case of the photographic lens according to the present embodiment, when the aperture St is set to the front side and the total length is shortened in the lens having a small F number, the spherical aberration is mainly in the first A lens group G1 can be set small. On the other hand, in terms of magnification chromatic aberration, field curvature correction, and non-dot difference (grid difference) correction, 19 M364864, an aspherical configuration having an inflection point (also called an inflection point) It is most effective in the final lens (third lens group G3). Moreover, the position of the aspherical surface is further away as it moves away from the aperture St. The result is that the aspherical surface of the final lens is separated from the aperture St. There is a downward 5 direction in which the intercept bf becomes smaller. Further, in the lens of the Ming Dynasty, the effective diameter of the light of each image is increased. Therefore, it is not necessary to enlarge the back intercept BF from the viewpoint of the appearance quality and the specification of the dust foreign matter. Thus, the final lens can be arranged with a priority in performance at a position where the back intercept BF becomes smaller. If the upper limit of the conditional expression (4) is exceeded, the back intercept 017 can be set to be long, but the correction effect by the above-mentioned final lens is lowered. In order to obtain better performance, the numerical range of the conditional formula (4) is preferably: BF/TL^ 0.18 ...... (4,) or more preferably: 15 BF/TL^ 0.12 .. (4, ?) The conditional expression (5) regulates the appropriate relationship between the paraxial focal length gate of the second lens group G3 and the total center thickness of the lens in the third lens group G3. In the case of the positive 弋(5), when D3g/f3 becomes a negative value, it is advantageous for the correction of the face curvature rib and the station. When D3g/f3 becomes a positive value, if the upper limit of the conditional expression is exceeded and the value of D3g/f3 becomes too wide, it is difficult to perform the image surface. Equation (6) is about the maximum image height YIM. In the photographic lens, bright and high imaging performance can be achieved under the condition of Condition 26). If it is lower than the lower limit of 6), the angle of view becomes too large. If the upper limit of condition (6) M364864 is exceeded, the angle of view becomes too narrow. In order to obtain better performance, the preferred range of values is: Number of conditional U) f/YIM^3.5 ......(6,) 5 15 20 It is also more preferable: 1.4^f/YIM^3.0 ......( 6,)), the equation (7) defines an appropriate relationship between the paraxial focal length n of the first lens group (1) and the total center thickness Dlg of the lenses in the first lens group (1). If the lower limit of the conditional expression (7) is exceeded, the first lens group has a large diameter of two in the photographic lens, and therefore the thickness of the penetration in the first lens group G1 cannot be sufficiently ensured. If the upper limit of the conditional expression (7) is exceeded, the range of values cannot be set in order to obtain better performance. Preferably, the number of the conditional expression (7) is 0.25 ^ Dlg/fl ^ 〇.6〇... (7ι) It is also preferable that: 0.28$ Dlg/fl $ 0.55 ...... (7") Conditional formula (1) The lower limit of the conditional surface (8) with respect to the surface of the first lens group (1) closest to the object side, There is a tendency for the spherical aberration and the image plane to be too low. Further, the distortion aberration becomes too high, and sufficient correction such as transmission through an aspheric surface cannot be performed. When the upper limit ‘ of the conditional expression (4) is exceeded, the spherical aberration and the field curvature become too high, and the distortion aberration tends to be too low. Also, it is advantageous with respect to the total length. In order to obtain better performance, it is preferable that the number of conditional formula (4) 21 M364864 is in the range of conditional formula (9) with respect to the Abbe number of the first lens "2 g. If: stop: = thickness is expected to be good at the same time In the range of image curvature and chromatic aberration of magnification, the range of values is not in order to obtain better performance. Preferably, the condition (9) is 〇-〇.2^f2/f3(45-, D2g) ..... (9,) can also be better: 1〇-〇-^f2/f3(45~,d2g) ...... (9,,) Conditional formula (10) The intercept BF and the thickness DL of the lens system. In order to satisfy the two requirements of shortening the total length of the lens and making the final lens surface closest to the photographic element 100 not close to the photographic surface, it is necessary to set the thickness DL and the back intercept BF of the lens system. If it is lower than the lower limit of I5 of the conditional expression, the back-intercept BF becomes too small. If the upper limit is exceeded, the thickness DL of the entire lens becomes too small, causing deterioration of aberration performance and rapidity of manufacturing assembly sensitivity. When the number of the aspherical surfaces is increased in the photographic lens, the sensitivity to deterioration in performance during manufacturing is increased. In order to obtain a variation in the molding conditions of the respective lens elements or a better performance in the assembly 20, the numerical value range of the conditional expression (10) is preferably 0.05^ BF/DL^ 0.42 ... (10,) can also be more preferably: 0.10S BF/DL^ 0.35 ...... (10,,) Conditional expression (11) regarding the thickest center thickness in the first lens group G1 22 M364864 The refractive index N1 of the lens. If the lower limit of the conditional expression (11) is exceeded, the thickness of the lens in the peripheral portion of the lens in the first lens group G1 cannot be maintained, which may occur during processing or may not be ground during polishing. In order to obtain better performance, preferably, the value of the conditional expression (n) ranges from: 1.75 ^ N1 ^ 2.50 (11'). If the upper limit exceeds the upper limit, the optical existing is present. The material has a high price of materials, so it is disadvantageous in terms of cost. It is also more preferable: 1.79$Ν1$2·15 ···...(11,,) 1〇Conditional formula (12) regarding the first lens group G1 If the focal length fi is lower than the lower limit of the conditional expression (12), the power of the first lens group (1) becomes too small, which is disadvantageous = wide field of view angle. With the upper limit, the power of the first lens group (1) becomes too large, which is not conducive to the correction of the coma aberration, the chromatic aberration of magnification, and the difference in the image plane at the peripheral angle of view. 15 For better performance, Preferably, the value range of the conditional expression (12) is: 0.5^f/fl ^ ! 〇... (12,) or more preferably: 〇·5$ f/fl ^0.95 ... (12,,) The conditional expression (13) defines an appropriate relationship between the overall paraxial focal length f and the total center thickness Dlg of the lens in the first lens group G1. If the lower limit of the conditional expression (13) is exceeded, the effective direct diameter of the first lens group is large in the photographic lens, so that the thickness of the P 77 of the edge of the lens in the first lens group G1 is sufficiently ensured to exceed the upper limit. If you cannot properly maintain the back intercept of the same 23 M364864, you cannot make the total length smaller. In order to obtain better performance, preferably, the value range of the conditional expression (13) is: 0.35 ^ Dlg / f ^ 0.7 (13) 5 Conditional formulas (14), (15) In the configuration example of FIGS. 6 to 8, the appropriate Abbe's number difference and the refractive index difference Δν between adjacent lenses in the composite aspherical lens when a composite aspherical lens is used. By accommodating the lens structure in the composite aspherical lens to satisfy the conditional expressions (14) and (15), the difference between the Abbe's number difference and the refractive index difference is as small as possible and is composed of a homogeneous 10 material, thereby being able to reduce the adjacent Light reflection from the interface between the lenses. As described above, the photographic lens according to the present embodiment has a relatively small number of lens groups as a whole, and the aspherical surface is effectively used while satisfying the predetermined condition that is advantageous for ensuring the shortening of the total length and the brightness. Since the overall lens structure is optimized, it is possible to achieve compactness and low cost while achieving brighter and higher imaging performance than in the past. Moreover, by satisfying the appropriate and preferable conditions, the manufacturing adaptability is good, and the souther imaging performance can be achieved. Further, according to the photographing apparatus of the present embodiment, since the photographing signal corresponding to the optical image formed by the high-performance photographing lens 20 according to the present embodiment is output, a bright and highly resolved photographed image can be obtained. [Embodiment] Next, a specific numerical example of the imaging lens according to the present embodiment will be described. In the following, a description will be given of a plurality of numerical examples. 24 M364864 Figs. 15 and 29 show specific lens data corresponding to the structure of the photographing lens shown in Fig. 1. This basic lens data is particularly shown in Fig. 15, and data on the aspheric surface is shown in Fig. 29. In the column of the surface number S i of the lens data shown in FIG. 15 , the photographic lens relating to the embodiment 将 has the surface of the lens element closest to the object side 5 as the first one and the side toward the image side sequentially. The number of the i-th face of the symbol. The column of the radius of curvature R i represents a value (mm) corresponding to the radius of curvature of the i-th face from the object side corresponding to the symbol Ri attached in Fig. 1 . The intercept of the plane interval Di also indicates the interval (mm) from the i-th surface of the object side and the optical axis of the 1+1 plane Si+1. The Ndj barrier indicates the value of the refractive index of the jth optical factor from the 10 object side to the d line (587.6 nm), and the column of N (945) indicates the value of the refractive index for the wavelength of the near-infrared region (94511111). The vdj block indicates the value of the Abbe number of the d-th line from the jth optical factor on the object side. The value of the focal length f (mm ) of the entire system is represented as various data in the outside of FIG. In the photographic lens according to the first embodiment, both surfaces of the second lens group G2 and the third lens group G3 have an aspherical shape. The first lens group (1) becomes a sphere _ plane. The basic lens data of Fig. 15 indicates the numerical value of the radius of curvature (paraxial radius of curvature) in the vicinity of the optical axis as the radius of curvature of the aspheric surfaces. The aspherical surface data of the imaging lens of the first embodiment is shown in FIG. In the numerical value indicated by 20 as the aspherical data, the symbol "E" indicates that the subsequent numerical value is a "power index of the base 10, and represents a numerical value expressed by the exponential function based on 1 〇. The value before "E" is multiplied. For example, if it is 1.0E-02 ', it means "ι.〇χ1〇-2". As aspherical data, note the non-25 M364864 sphere represented by the following formula (Α) The value of each coefficient Ai, κ in the formula of the shape. In detail, z represents a tangent plane from a point on the aspheric surface at a position h from the optical axis to the aspherical surface (a plane perpendicular to the optical axis) The length of the vertical line () Z=C-h2/{l+ ( 1- (K*C2*h2) I/2}+lAi*hi ...... (A) 5 Here, Z: aspherical Depth (mm) h : distance from the optical axis to the lens surface (height) (mm) K : eccentricity
C ·近轴曲率=1/R 10 (R:近轴曲率半徑）C · paraxial curvature = 1/R 10 (R: paraxial radius of curvature)
Ai·第i次（i爲3以上的整數）的非球面係數 在實施例1相關的攝影透鏡中，作爲非球面係數Ai根 據需要有效使用第10次爲止的係數A3〜A10而表示各非球 面。 15 與以上的實施例1相關的攝影透鏡同樣地，將對應於 圖2所示的攝影透鏡的結構的具體透鏡數據作爲實施例2表 示於圖16及圖30。而且同樣地，將對應於圖3至圖14所示的 攝影透鏡的結構的具體透鏡數據作爲實施例3至實施例14 表示於圖17至圖28及圖31至圖42。 20 另外，實施例5〜6相關的攝影透鏡的第二透鏡組G2 及第三透鏡組G3的兩面均爲非球面形狀，並且第一透鏡組 G1的最罪近物側的面及最最靠近物側的面成爲非球面形 狀。其他貫施例相關的攝影透鏡，與實施例1相關的攝影透 鏡同樣地，第二透鏡組G2及第三透鏡組（^的兩面均爲非球 26 M364864 面形狀，並且第一透鏡組G1成爲球面。 而且’在圖43、圖44圖表示總結了對各實施例的有關 上述各條件式的值。在圖43、圖44中，在數值附加“*，，的 部分表示從條件式的數值範圍脫離的情況。 5 圖45 (A)〜（C)分別表示實施例1的攝影透鏡的球 面像差、非點像差（像面彎曲）、及畸變（畸變像差）^ 在各像差圖中表示以e線（波長546.07nm )作爲基準波長的 像差。在球面像差圖及非點像差圖表示對於近紅外線（波 長945nm)、C線（波長656.27nm)的像差。在非點像差圖 10中，實線表示弧矢方向（S)，虛線表示子午方向（τ)的 像差。FNo.表示F值，Υ表示像高。 同樣地’在圖46 ( A )〜（C )表示實施例2的攝影透 鏡有關的各種像差。同樣地，在圖47 (A)〜（C)至圖58 (A)〜（C)表示實施例3至實施例6的攝影透鏡有關的各 15 種像差。 另外’本實施例是關於分光也考慮在比較近紅外側的 性能而進行設計且設計成也耐於比較寬波帶的使用的。由 此’在像差圖作爲近紅外區域的代表例也記載有Μ，nm的 像差。近幾年，例如對移動體搭載攝影機有在近紅外波長 20領域的要求。對於這種要求，例如，可以將本實施例的攝 影透鏡的透過波長領域從可見擴展到近紅外，或者僅在近 紅外的一部分領域的狹窄範圍使用等的使用方式。而且， 僅近紅外的一部分的狹窄領域或可見的一部分的狹窄領域 等在狹窄波長領域使用時’與在寬波帶使用時相比也可以 27 M364864 不重視軸上色像差。 由以上的各數值數據及各像差圖可知，對各實施例實 現明梵且高成像性能。 ,另外，本創作不限於上述實施方式及各實施例，可進 5订各種變形實施。例如，各透鏡成分的曲率半徑、面間隔 及折射率的值等不限於在上述各數值實施例所示的值，可 取其他值。 而且，在上述各實施例中，爲在全部以固定隹點 的前提下的記載，但是，也能夠設爲可調整焦點的、結構。 的例如，也可以將透鏡系統整體抽出或將一部分的透鏡在光 軸上移動而設爲可自動聚焦的結構。 【圖式簡單說明】 圖1表示本創作的一實施方式相關的攝影透鏡的第一 15結構例，是對應於實施例1的透鏡剖面圖。 圖2表示本創作的一實施方式相關的攝影透鏡的第二 結構例，是對應於實施例2的透鏡剖面圖。 圖3表示本創作的一實施方式相關的攝影透鏡的第三 結構例’是對應於實施例3的透鏡剖面圖。 !〇 圖4表示本創作的一實施方式相關的攝影透鏡的第四 結構例’是對應於實施例4的透鏡剖面圖。 圖5表示本創作的一實施方式相關的攝影透鏡的第 五結構例，是對應於實施例5的透鏡剖面圖。 圖6表示本創作的一實施方式相關的攝影透鏡的第六 28 M364864 結構例，是對應於實施例6的透鏡剖面圖。 圖7表示本創作的一實施方式相關的攝影透鏡的第 七結構例，是對應於實施例7的透鏡剖面圖。 圖8表示本創作的一實施方式相關的攝影透鏡的第八 5 結構例，是對應於實施例8的透鏡剖面圖。 圖9表示本創作的一實施方式相關的攝影透鏡的第九 結構例，是對應於實施例9的透鏡剖面圖。 圖10表示本創作的一實施方式相關的攝影透鏡的第 十結構例，是對應於實施例10的透鏡剖面圖。 10 圖11表示本創作的一實施方式相關的攝影透鏡的第 十一結構例，是對應於實施例11的透鏡剖面圖。 圖12表示本創作的一實施方式相關的攝影透鏡的第 十二結構例，是對應於實施例12的透鏡剖面圖。 圖13表示本創作的一實施方式相關的攝影透鏡的第 15十三結構例，是對應於實施例13的透鏡剖面圖。 圖14表示本創作的一實施方式相關的攝影透鏡的第 十四結構例，是對應於實施例14的透鏡剖面圖。 圖15是表示本創作的實施例1相關的攝影透鏡的基本 透鏡數據的圖。 20 圖16是表示本創作的實施例2相關的攝影透鏡的基本 透鏡數據的圖。 圖17是表示本創作的貫施例3相關的攝影透鏡的基本 透鏡數據的圖。 圖1 8是表示本創作的貫施例4相關的攝影透鏡的基本 29 M364864 透鏡數據的圖。 圖19是表示本創作的實施例5相關的攝影透鏡的基本 透鏡數據的圖。 圖20是表示本創作的實施例6相關的攝影透鏡的基本 透鏡數據的圖。 圖21疋表不本創作的實施例了相關的攝影透鏡的基本 透鏡數據的圖。 圖2是表示本創作的實施例8相關的攝影透鏡的基本 透鏡數據的圖。 圖23是表示本創作的實施例9相關的攝影透鏡的基本 透鏡數據的圖。 圖24是表示本創作的實施例10相關的攝影透鏡的基 本透鏡數據的圖。 圖25是表示本創作的實施例11相關的攝影透鏡的基 15本透鏡數據的圖。 圖26是表示本創作的實施例12相關的攝影透鏡的基 本透鏡數據的圖。 圖27是表示本創作的實施例13相關的攝影透鏡的基 本透鏡數據的圖。 !〇 圖2 8是表示本創作的實施例14相關的攝影透鏡的基 本透鏡數據的圖。 圖29是表示關於本創作的實施例丨相關的攝影透鏡的 非球面的數據的圖。 圖30疋表示關於本創作的實施例2相關的攝影透鏡的 30 M364864 非球面的數據的圖。 施例3相關的攝影透鏡的 圖31是表示關於本創作的實 非球面的數據的圖。 圖32是表示關於本創 非球面的數據的圖。 ”施例4相關的攝影透鏡的 圖33是表示關於本創你 非球面的數據的圖。乍的實施例5相關的攝影透鏡的 非玟二關於本創作的實施例6相關的攝影透鏡的 非球面的數據的圖。 〜 關的攝影透鏡的 1〇 ⑽5是表_於本創作的實施例7相 非球面的數據的圖。 圓3 6是表示關於本創作 ,A J作的實施例8相關的攝影透鏡的 非球面的數據的圖。 圖7疋表不關於本創作的實施例9相關的攝影透鏡的 15 非球面的數據的圖。 圖38是表示關於本創作的實施例刚目關的攝影透鏡 的非球面的數據的圖。 圖39是表示關於本創作的實施例⑴目關的攝影透鏡 的非球面的數據的圖。 施例12相關的攝影透鏡 20 圖40是表示關於本創作的實 的非球面的數據的圖。 圖41疋表不關於本創作的實施例丨3相關的攝影透鏡 的非球面的數據的圖。 圖42是表示關於本創作的實施例14相關的攝影透鏡 M364864 的非球面的數據的圖。 對實施例i〜7總結表示有關條件式的值的圖。 圖。圖〜對實施例8〜14總結表示有關條件式的值的 5 15 20 圖45是表示本創作的實施例⑷ 像差的像差圖，⑷表示球面像差 ' ⑼攝：透：的各種 (像面，彎曲）、⑻表示崎變像差。）“非點像差 像差的圖=示 (像面彎曲）、⑻表示崎變像差。）表不非點像差 ❹的:是圖表示 (像面心、==⑻表示非點像差 ) 表不畸變像差。 像差：差是圖表示 (像面彎曲表™ 像差=示=的， (像面彎曲）、（C) W面像差、（B)表示非點像差 表不畸變像差。 圖5 0疋表不本創作 像差的像差圖，（Α= 攝影透鏡的各種 (像面f曲）、/球面像差、⑻表示非點像差 k U表不畸變像差。 像差=示γ:;ηι的實广 (A)表不球面像差、（B)表示非點像差 32 M364864 (像面彎曲）、（c)表示畸變像差。 ·' 圖52是表示本創作的實施例8相關的攝影透鏡的各種 ； 像差的像差圖’（A)表示球面像差、（B)表示非點像差 (像面彎曲）、（C )表示畸變像差。 5 圖5 3是表示本創作的實施例9相關的攝影透鏡的各種 像差的像差圖’（A)表示球面像差、（B)表示非點像差 (像面彎曲）、（C)表示畸變像差。 圖54是表示本創作的實施例10相關的攝影透鏡的各 種像差的像差圖，（A)表示球面像差、表示非點像 10差（像面變曲）、（C)表示崎變像差。 圖55是表示本創作的實施例^相關的攝影透鏡的各 種像差的像差圖，（A )表示球面像差、（B )表示非點像 差（像面彎曲）、（C)表示畸變像差。 圖56是表示本創作的實施例12相關的攝影透鏡的各 15種像差的像差圖，（A )表示球面像差、（B )表示非點像 差（像面彎曲）、（C)表示畸變像差。 # 圖57是表示本創作的實施例13相關的攝影透鏡的各 種像差的像差圖’（A )表不球面像差、（B )表示非點像 差（像面彎曲）、（C)表示畸變像差。 .20 圖58是表示本創作的實施例14相關的攝影透鏡的各 種像差的像差圖’（A )表示球面像差、（B )表示非點像 差（像面彎曲）、（C)表示畸變像差。 【主要元件符號說明】 33 M364864 第一透鏡組G1 第三透鏡組G3 第一透鏡L1 負透鏡L12 透鏡基板Llb，L2b, L3b 第二透鏡L2 第三透鏡L3 面間隔D0,D1，D2，D3,D4,D5 ,D6,D7,D8,D9,D10,D11,D12 ,D13,D14 光闌St 光學部件CG 第二透鏡組G2 攝影元件100 正透鏡L11 物側非球面透鏡部 L1 a,L2a,L3 a 像側非球面透鏡部 L1 c，L2c，L3 c 曲率半徑 R1，R2，R3，R4，R5 ，R6，R7,R8,R9,R1〇，ri i，Ri2 ，R13，R14In the photographic lens according to the first embodiment, the aspherical coefficient of the i-th (i is an integer of 3 or more) is used as the aspherical coefficient Ai, and the aspherical surface Ai is used to effectively use the coefficients A3 to A10 until the tenth time. . In the same manner as the photographic lens of the first embodiment, the specific lens data corresponding to the configuration of the photographic lens shown in Fig. 2 is shown as Fig. 16 and Fig. 30 as the second embodiment. Further, similarly, specific lens data corresponding to the configuration of the photographic lens shown in Figs. 3 to 14 is shown as Figs. 17 to 28 and Figs. 31 to 42 as Embodiments 3 to 14. Further, both the second lens group G2 and the third lens group G3 of the photographic lens according to the fifth to sixth embodiments have an aspherical shape, and the most sinus side of the first lens group G1 is the closest to the closest side. The surface on the object side has an aspherical shape. In the same manner as the photographic lens of the first embodiment, the second lens group G2 and the third lens group (both sides are aspherical 26 M364864 face shapes, and the first lens group G1 becomes the same as the photographic lens according to the first embodiment). Further, the values of the above respective conditional expressions for the respective embodiments are summarized in Fig. 43 and Fig. 44. In Fig. 43 and Fig. 44, the part of the numerical value added with "*," indicates the value of the conditional expression. 5 (A) to (C) show spherical aberration, astigmatism (field curvature), and distortion (distortion aberration) of the imaging lens of the first embodiment, respectively. The figure shows the aberration with the e-line (wavelength of 546.07 nm) as the reference wavelength. The spherical aberration diagram and the astigmatism diagram show aberrations for near-infrared rays (wavelength 945 nm) and C-line (wavelength 656.27 nm). In the astigmatism diagram 10, the solid line indicates the sagittal direction (S), and the broken line indicates the aberration in the meridional direction (τ). FNo. indicates the F value, and Υ indicates the image height. Similarly, 'Fig. 46 (A)~ (C) shows various aberrations related to the imaging lens of Example 2. Similarly, in Fig. 47 (A) ~ C) to Fig. 58 (A) to (C) show 15 kinds of aberrations relating to the imaging lenses of the third to sixth embodiments. In addition, the present embodiment is directed to the performance of the near infrared side in consideration of the spectral splitting. It is designed and designed to be resistant to the use of a wider band. Thus, the aberration diagram is a representative example of the near-infrared region, and the aberration of nm is also described. In recent years, for example, a camera is mounted on a mobile body. In the field of near-infrared wavelength 20, for this requirement, for example, the transmission wavelength region of the photographic lens of the present embodiment can be extended from visible to near-infrared, or used only in a narrow range of a part of the near-infrared region. In addition, only a part of the narrow field of the near-infrared or a narrow part of the visible area is used in the narrow wavelength field, and it is also possible to use 27 M364864 when the wide band is used. For each of the numerical data and the aberration diagrams, it is understood that the imaging performance is improved for each of the embodiments. Further, the present creation is not limited to the above-described embodiments and the respective embodiments, and various changes can be made. For example, the values of the radius of curvature, the interplanar spacing, and the refractive index of each lens component are not limited to the values shown in the above numerical examples, and other values may be used. Further, in the above embodiments, all of them are fixed. Although it is described in the premise of the defect, it is also possible to adopt a configuration in which the focus can be adjusted. For example, the entire lens system may be extracted or a part of the lens may be moved on the optical axis to be autofocusable. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a first embodiment of a photographic lens according to an embodiment of the present invention, which corresponds to a lens of the first embodiment. Fig. 2 shows a photographic lens according to an embodiment of the present invention. The second structural example is a lens cross-sectional view corresponding to the second embodiment. Fig. 3 is a cross-sectional view showing a third embodiment of the photographic lens according to an embodiment of the present invention, which corresponds to the third embodiment. Fig. 4 is a cross-sectional view showing a fourth configuration example of the photographing lens according to an embodiment of the present invention, which corresponds to the fourth embodiment. Fig. 5 is a cross-sectional view showing a fifth embodiment of the photographic lens according to the embodiment of the present invention, which corresponds to the fifth embodiment. Fig. 6 is a cross-sectional view showing the structure of a sixth 28 M364864 of the photographic lens according to an embodiment of the present invention, which corresponds to the lens of the sixth embodiment. Fig. 7 is a view showing a seventh configuration example of the photographing lens according to the embodiment of the present invention, and is a cross-sectional view of the lens corresponding to the seventh embodiment. Fig. 8 is a view showing an eighth embodiment of the photographic lens according to the embodiment of the present invention, which is a cross-sectional view of the lens corresponding to the eighth embodiment. Fig. 9 is a cross-sectional view showing a ninth configuration of a photographic lens according to an embodiment of the present invention, which corresponds to a ninth embodiment. Fig. 10 is a cross-sectional view showing a tenth configuration of a photographing lens according to an embodiment of the present invention, which corresponds to a tenth embodiment. Fig. 11 is a cross-sectional view showing the eleventh configuration of the photographing lens according to the embodiment of the present invention, and corresponds to the lens of the eleventh embodiment. Fig. 12 is a view showing a twelfth configuration example of the photographing lens according to the embodiment of the present invention, and is a cross-sectional view of the lens corresponding to the fifteenth embodiment. Fig. 13 is a cross-sectional view showing the ninth embodiment of the photographic lens according to the embodiment of the present invention, which corresponds to the lens of the thirteenth embodiment. Fig. 14 is a cross-sectional view showing the fourteenth configuration of the photographic lens according to the embodiment of the present invention, and corresponds to the lens of the fourteenth embodiment. Fig. 15 is a view showing basic lens data of an imaging lens according to Example 1 of the present invention. Fig. 16 is a view showing basic lens data of the photographing lens relating to Example 2 of the present creation. Fig. 17 is a view showing basic lens data of the photographic lens according to the third embodiment of the present invention. Fig. 18 is a view showing the basic 29 M364864 lens data of the photographic lens of the fourth embodiment of the present invention. Fig. 19 is a view showing basic lens data of an imaging lens according to Example 5 of the present invention. Fig. 20 is a view showing basic lens data of an imaging lens according to Example 6 of the present invention. Figure 21 is a diagram showing the basic lens data of the associated photographic lens in the embodiment of the present invention. Fig. 2 is a view showing basic lens data of an photographic lens according to Example 8 of the present invention. Fig. 23 is a view showing basic lens data of a photographic lens according to Example 9 of the present invention. Fig. 24 is a view showing basic lens data of an imaging lens according to Example 10 of the present invention. Fig. 25 is a view showing the base lens data of the photographing lens of the eleventh embodiment of the present invention. Fig. 26 is a view showing basic lens data of an imaging lens according to Example 12 of the present invention. Fig. 27 is a view showing basic lens data of an imaging lens according to Example 13 of the present invention. Fig. 28 is a view showing basic lens data of the photographing lens relating to Example 14 of the present creation. Fig. 29 is a view showing data on the aspherical surface of the photographing lens relating to the embodiment of the present invention. Fig. 30A is a view showing data of 30 M364864 aspherical surface of the photographic lens relating to Example 2 of the present creation. Fig. 31 of the photographic lens relating to the third embodiment Fig. 31 is a view showing data on a real aspherical surface of the present creation. Fig. 32 is a view showing data on the intrinsic aspherical surface. Fig. 33 of the photographic lens relating to Example 4 is a diagram showing data on the aspherical surface of the present invention. The non-spherical lens of the ninth embodiment of the photographic lens is not related to the photographic lens of the sixth embodiment of the present creation. A graph of the data of the spherical surface. 1 〇 (10) 5 of the closed photographic lens is a graph of the data of the aspheric surface of the seventh embodiment of the present invention. The circle 3 6 is related to the eighth embodiment of the present work, AJ. Fig. 7 is a view showing data of 15 aspherical surfaces of the photographic lens relating to Example 9 of the present creation. Fig. 38 is a view showing the photography of the embodiment of the present creation. Fig. 39 is a view showing data on the aspherical surface of the photographic lens of the embodiment (1) of the present creation. The photographic lens 20 relating to the ninth embodiment is shown in Fig. 40 Figure of the aspherical data of the photographic lens of the embodiment 本3 of the present creation. Fig. 42 is a view showing the photographic lens M364864 relating to the embodiment 14 of the present creation. Aspherical A graph showing the values of the conditional expressions is given for the examples i to 7. Fig. 5 is a summary of the values of the conditional expressions for the examples 8 to 14 and Fig. 45 is a diagram showing the implementation of the present creation. Example (4) Aberration aberration diagram, (4) indicates spherical aberration ' (9): Various types (image surface, curved) and (8) indicate saturation aberration.) "Grade of astigmatism aberration = indication (image The surface is curved), and (8) indicates the sag aberration. The table is not a point aberration. :: It is a graph representation (like face core, ==(8) means astigmatism). Table distortion-free aberration. Aberration: The difference is a graph representation (image plane curvature table TM aberration = indication =, (image plane curvature), (C) W plane aberration, and (B) represents astigmatism table distortion aberration. 0 疋 像 疋 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像 像γ:; ηι real wide (A) indicates spherical aberration, (B) indicates astigmatism 32 M364864 (image surface curvature), and (c) indicates distortion aberration. · ' Fig. 52 shows the implementation of the present creation Various types of photographic lenses related to Example 8; aberration diagrams of aberrations (A) indicate spherical aberration, (B) indicates astigmatism (field curvature), and (C) indicates distortion aberration. It is an aberration diagram of various aberrations of the photographic lens according to the ninth embodiment of the present invention, (A) represents spherical aberration, (B) represents astigmatism (field curvature), and (C) represents distortion aberration. Fig. 54 is a diagram showing aberrations of various aberrations of the imaging lens according to Example 10 of the present invention, wherein (A) shows spherical aberration, indicates non-point image 10 difference (image surface curvature), and (C) indicates Saki. Varying aberrations. Reference numeral 55 is an aberration diagram showing various aberrations of the imaging lens according to the embodiment of the present invention, wherein (A) represents spherical aberration, (B) represents astigmatism (field curvature), and (C) represents distortion image. Fig. 56 is a diagram showing aberrations of 15 kinds of aberrations of the imaging lens according to Example 12 of the present invention, wherein (A) shows spherical aberration and (B) shows astigmatism (field curvature), ( C) indicates distortion aberration. Fig. 57 is a diagram showing aberrations of various aberrations of the imaging lens according to Example 13 of the present invention. (A) indicates spherical aberration, and (B) indicates astigmatism (image) (C) represents distortion aberration. Fig. 58 is a diagram showing aberrations of various aberrations of the imaging lens according to Example 14 of the present invention, wherein (A) represents spherical aberration and (B) represents non- Point aberration (image surface curvature), (C) indicates distortion aberration. [Main component symbol description] 33 M364864 First lens group G1 Third lens group G3 First lens L1 Negative lens L12 Lens substrate Llb, L2b, L3b Two lens L2 Third lens L3 surface spacing D0, D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14 Optical St Learning part CG Second lens group G2 Photographic element 100 Positive lens L11 Object side aspherical lens portion L1 a, L2a, L3 a Image side aspherical lens portion L1 c, L2c, L3 c Curvature radius R1, R2, R3, R4, R5, R6, R7, R8, R9, R1〇, ri i, Ri2, R13, R14
距離DL 光軸Z1 34Distance DL optical axis Z1 34