TW201329504A - Telephoto zoom lens - Google Patents
Telephoto zoom lens Download PDFInfo
- Publication number
- TW201329504A TW201329504A TW101100632A TW101100632A TW201329504A TW 201329504 A TW201329504 A TW 201329504A TW 101100632 A TW101100632 A TW 101100632A TW 101100632 A TW101100632 A TW 101100632A TW 201329504 A TW201329504 A TW 201329504A
- Authority
- TW
- Taiwan
- Prior art keywords
- lens
- lens group
- group
- focal length
- optical axis
- Prior art date
Links
Landscapes
- Lenses (AREA)
Abstract
Description
本發明係有關於一種望遠變焦鏡頭,尤指一種可應用於數位攝影機(DV)、數位相機(DSC)、平板電腦…等手持式電子產品內或CCTV閉路電視攝影機、安全監控系統…等影像擷取裝置內的高倍率望遠變焦鏡頭。The invention relates to a telephoto zoom lens, in particular to a handheld electronic product such as a digital camera (DV), a digital camera (DSC), a tablet computer, or a CCTV CCTV camera, a security monitoring system, etc. Take the high magnification telephoto zoom lens inside the device.
應用於拍攝電影的攝影機,常需要透過變焦鏡頭將遠景中的微小物體放大到人物特寫的畫面,此動作已變成重要的攝影技巧。在安全監控的閉路電視系統中,也需要將遠距的景物放大到可以辨識容貌的清晰影像,所以在CCTV閉路電視攝影機及安全監控系統的取像鏡組中需要使用具有高放大倍率的望遠變焦鏡頭。Cameras used for filming often need to zoom in on tiny objects in the foreground to the close-up of the person through the zoom lens. This action has become an important photography technique. In the CCTV system for security monitoring, it is also necessary to enlarge the distant scene to a clear image that can recognize the appearance, so in the CCTV CCTV camera and the security camera system, it is necessary to use the telephoto zoom with high magnification. Lens.
在望遠鏡頭中,由於焦距長才可能產生較大的放大倍率影像,也因為需要很長的焦距,所以使得鏡頭系統的總長也是較長的。因為要顧及廣角端的影像,第一群鏡組的孔徑一般也是較大的,也就是說,整個高倍望遠鏡頭的體積是較大的。In the telescope head, a large magnification image is possible due to the long focal length, and because the long focal length is required, the total length of the lens system is also long. Because of the wide-angle end image, the aperture of the first group of mirrors is generally larger, that is, the volume of the entire high-powered telescope head is larger.
首先,美國專利US7,532,411已揭露一種4群屈光能力為PNPP(正負正正)的變焦系統,其具備有高變倍(10X)的功能,不過該前案4鏡群在變焦的過程中4鏡群全部有位移,如此架構固然可以獲得良好的成像品質,然而第一群鏡組的輻面有效直徑是鏡頭系統中之最大者,將此又大又重的鏡組驅動,必是一件耗能的工作。First, U.S. Patent No. 7,532,411 discloses a four-group zoom system with PNPP (positive and negative positive), which has a function of high zoom (10X), but the front mirror group is in the process of zooming. 4 The mirror group has all displacements, so the architecture can obtain good imaging quality. However, the effective diameter of the first group of mirrors is the largest in the lens system. This large and heavy mirror is driven. Energy-consuming work.
再者,日本特許公報JP昭50-26931已揭露一種5群屈光能力為PNPNP的變焦系統,其中第2、4群鏡組是以連動的光學補償方式來保持影像在同一聚焦面上。另外,日本特許公報JP昭45-08840已揭露一種4群屈光能力為PNPP的機械補償變焦結構,不過其中有第1、2、3、4群鏡組皆為運動群,對製造成本而言是不利的。Further, Japanese Laid-Open Patent Publication No. Sho 50-26931 discloses a zoom system of five groups of PNPNPs, in which the second and fourth group of mirrors maintain the images on the same focal plane in a coordinated optical compensation manner. In addition, a mechanically compensated zoom structure in which four groups of refractive powers are PNPP has been disclosed in Japanese Patent Publication No. 45-08840, but the first, second, third, and fourth group mirror groups are all motion groups, and the manufacturing cost is It is unfavorable.
此外,日本特許公報JP昭46-32989也揭示一種達成高變倍(15X)的變焦設計,其係為4群屈光能力為PNNP的結構,其中第2、3群鏡組運動,以達成機械補償的變焦結構。再者,美國專利US5,815,322係採用內對焦的設計,也可以達成高變倍(20X)的變焦設計,不過該前案是採用PNNP的架構。另外,美國專利US7,672,061係採用內對焦的設計,也可以達成高變倍(22X)的變焦設計,不過該前案是採用PNNP的架構。In addition, Japanese Patent Publication No. Sho 46-32989 also discloses a zoom design that achieves a high zoom (15X), which is a structure in which four groups of refractive powers are PNNPs, in which the second and third groups of mirrors move to achieve mechanical Compensated zoom structure. Furthermore, U.S. Patent No. 5,815,322 adopts an internal focusing design, and can also achieve a high zoom (20X) zoom design, but the previous case is a PNNP architecture. In addition, U.S. Patent No. 7,672,061 adopts an internal focusing design, and can also achieve a high zoom (22X) zoom design, but the previous case is a PNNP architecture.
本發明實施例在於提供一種望遠變焦鏡頭,其採用4群屈光能力依序為PNPP的透鏡群組,屬於一種內對焦式的機械補償變焦鏡頭結構。The embodiment of the invention provides a telephoto zoom lens, which adopts a group of 4 groups of refractive powers in the order of PNPP, and belongs to an inner focus type mechanical compensation zoom lens structure.
本發明其中一實施例所提供的一種望遠變焦鏡頭,其包括:一具有正屈光能力的第一透鏡群組、一具有負屈光能力的第二透鏡群組、一具有正屈光能力的第三透鏡群組、及一具有正屈光能力的第四透鏡群組。上述具有正屈光能力的第一透鏡群組固定於一第一預定位置上。上述具有負屈光能力的第二透鏡群組隨著望遠變焦鏡頭的放大倍率的變動以沿著望遠變焦鏡頭的光軸來移動。上述具有正屈光能力的第三透鏡群組固定於一第二預定位置上。上述具有正屈光能力的第四透鏡群組沿著望遠變焦鏡頭的光軸來移動,以保持望遠變焦鏡頭所產生的成像面準確投射在一影像記錄器上。第一透鏡群組、第二透鏡群組、第三透鏡群組、及第四透鏡群組沿著光軸並從望遠變焦鏡頭的物體側朝向成像側的方向依序排列,且第一透鏡群組、第二透鏡群組、第三透鏡群組、及第四透鏡群組的焦距須符合下列兩組條件:A telephoto zoom lens according to an embodiment of the present invention includes: a first lens group having positive refractive power, a second lens group having negative refractive power, and a positive refractive power a third lens group, and a fourth lens group having positive refractive power. The first group of lenses having positive refractive power is fixed at a first predetermined position. The second lens group having the negative refractive power described above moves along the optical axis of the telephoto zoom lens as the magnification of the telephoto zoom lens changes. The third lens group having positive refractive power is fixed to a second predetermined position. The fourth lens group having positive refractive power is moved along the optical axis of the telephoto zoom lens to keep the imaging surface generated by the telephoto zoom lens accurately projected on an image recorder. The first lens group, the second lens group, the third lens group, and the fourth lens group are sequentially arranged along the optical axis and from the object side of the telephoto zoom lens toward the imaging side, and the first lens group The focal lengths of the group, the second lens group, the third lens group, and the fourth lens group must meet the following two sets of conditions:
其中,F1為第一透鏡群組的焦距,F2為第二透鏡群組的焦距,F3為第三透鏡群組的焦距。Wherein F1 is the focal length of the first lens group, F2 is the focal length of the second lens group, and F3 is the focal length of the third lens group.
本發明另外一實施例所提供的一種望遠變焦鏡頭,其包括:一具有正屈光能力的第一透鏡群組、一具有負屈光能力的第二透鏡群組、一具有正屈光能力的第三透鏡群組、及一具有正屈光能力的第四透鏡群組。上述具有正屈光能力的第一透鏡群組固定於一第一預定位置上。上述具有負屈光能力的第二透鏡群組隨著望遠變焦鏡頭的放大倍率的變動以沿著望遠變焦鏡頭的光軸來移動。上述具有正屈光能力的第三透鏡群組固定於一第二預定位置上。上述具有正屈光能力的第四透鏡群組沿著望遠變焦鏡頭的光軸來移動,以保持望遠變焦鏡頭所產生的成像面準確投射在一影像記錄器上。第一透鏡群組、第二透鏡群組、第三透鏡群組、及第四透鏡群組沿著光軸並從望遠變焦鏡頭的物體側朝向成像側的方向依序排列。第一透鏡群組包括一第一透鏡、一第二透鏡、及一第三透鏡,第一透鏡與第二透鏡相互膠合以形成一雙膠合透鏡,第一透鏡、第二透鏡、及第三透鏡沿著光軸並從物體側朝向成像側的方向依序排列,且雙膠合透鏡及第三透鏡的焦距須符合下列條件:A telephoto zoom lens according to another embodiment of the present invention includes: a first lens group having positive refractive power, a second lens group having negative refractive power, and a positive refractive power a third lens group, and a fourth lens group having positive refractive power. The first group of lenses having positive refractive power is fixed at a first predetermined position. The second lens group having the negative refractive power described above moves along the optical axis of the telephoto zoom lens as the magnification of the telephoto zoom lens changes. The third lens group having positive refractive power is fixed to a second predetermined position. The fourth lens group having positive refractive power is moved along the optical axis of the telephoto zoom lens to keep the imaging surface generated by the telephoto zoom lens accurately projected on an image recorder. The first lens group, the second lens group, the third lens group, and the fourth lens group are sequentially arranged along the optical axis and from the object side of the telephoto zoom lens toward the imaging side. The first lens group includes a first lens, a second lens, and a third lens. The first lens and the second lens are glued together to form a double cemented lens, a first lens, a second lens, and a third lens. The directions along the optical axis and from the object side toward the imaging side are sequentially arranged, and the focal lengths of the double cemented lens and the third lens are subject to the following conditions:
其中,F1_12為第一透鏡群組的雙膠合透鏡的焦距,F13為第一透鏡群組的第三透鏡的焦距。Wherein F 1_12 is the focal length of the double lens of the first lens group, and F 13 is the focal length of the third lens of the first lens group.
本發明再另外一實施例所提供的一種望遠變焦鏡頭,其包括:一具有正屈光能力的第一透鏡群組、一具有負屈光能力的第二透鏡群組、一具有正屈光能力的第三透鏡群組、及一具有正屈光能力的第四透鏡群組。上述具有正屈光能力的第一透鏡群組固定於一第一預定位置上。上述具有負屈光能力的第二透鏡群組隨著望遠變焦鏡頭的放大倍率的變動以沿著望遠變焦鏡頭的光軸來移動。上述具有正屈光能力的第三透鏡群組固定於一第二預定位置上。上述具有正屈光能力的第四透鏡群組沿著望遠變焦鏡頭的光軸來移動,以保持望遠變焦鏡頭所產生的成像面準確投射在一影像記錄器上。第一透鏡群組、第二透鏡群組、第三透鏡群組、及第四透鏡群組沿著光軸並從望遠變焦鏡頭的物體側朝向成像側的方向依序排列。第二透鏡群組包括一第一透鏡、一第二透鏡、及一第三透鏡,第二透鏡與第三透鏡相互膠合以形成一雙膠合透鏡,第一透鏡、第二透鏡、及第三透鏡沿著光軸並從物體側朝向成像側的方向依序排列,且第一透鏡與雙膠合透鏡的焦距須符合下列條件:According to still another embodiment of the present invention, a telephoto zoom lens includes: a first lens group having positive refractive power, a second lens group having negative refractive power, and a positive refractive power. a third lens group and a fourth lens group having positive refractive power. The first group of lenses having positive refractive power is fixed at a first predetermined position. The second lens group having the negative refractive power described above moves along the optical axis of the telephoto zoom lens as the magnification of the telephoto zoom lens changes. The third lens group having positive refractive power is fixed to a second predetermined position. The fourth lens group having positive refractive power is moved along the optical axis of the telephoto zoom lens to keep the imaging surface generated by the telephoto zoom lens accurately projected on an image recorder. The first lens group, the second lens group, the third lens group, and the fourth lens group are sequentially arranged along the optical axis and from the object side of the telephoto zoom lens toward the imaging side. The second lens group includes a first lens, a second lens, and a third lens, and the second lens and the third lens are glued together to form a double cemented lens, the first lens, the second lens, and the third lens Arranged along the optical axis and from the object side toward the imaging side, and the focal length of the first lens and the double cemented lens must meet the following conditions:
其中,F21為第二透鏡群組的第一透鏡的焦距,F2_23為第二透鏡群組的雙膠合透鏡的焦距。Wherein F 21 is the focal length of the first lens of the second lens group, and F 2_23 is the focal length of the double lens of the second lens group.
因此,本發明的有益效果至少包括有:Therefore, the beneficial effects of the present invention include at least:
1、本發明可提供一種高變倍比、長焦距、且高成像品質的取像用變焦鏡頭。1. The present invention can provide a zoom lens for image capturing with high zoom ratio, long focal length, and high image quality.
2、本發明能夠設計且製造一種高品質、第一透鏡群組有適當的輻面直徑、且放大倍率可達20X的取像用變焦鏡頭。2. The present invention is capable of designing and manufacturing a high-quality, first lens group having an appropriate radial diameter and an imaging zoom lens having a magnification of up to 20X.
為使能更進一步瞭解本發明之特徵及技術內容,請參閱以下有關本發明之詳細說明與附圖,然而所附圖式僅提供參考與說明用,並非用來對本發明加以限制者。For a better understanding of the features and technical aspects of the present invention, reference should be made to the accompanying drawings.
請參閱圖1A至圖1C所示,其分別顯示本發明第一實施例的望遠變焦鏡頭的各透鏡群組在廣角端(Wide)、標準位置(Normal)及望遠端(Tele)三種型態下的透鏡配置示意圖,其中圖1A中的D1至D24表示各光學表面之間的軸向距離,圖1B中的S1至S24為各鏡片的光學表面編號。Please refer to FIG. 1A to FIG. 1C , which respectively show the lens groups of the telephoto zoom lens according to the first embodiment of the present invention at the wide angle end (Wide), the standard position (Normal) and the telephoto end (Tele). A schematic diagram of a lens configuration in which D1 to D24 in Fig. 1A indicate axial distances between optical surfaces, and S1 to S24 in Fig. 1B are optical surface numbers of the respective lenses.
本發明第一實施例的望遠變焦鏡頭可由12片透鏡所組成。由圖1A至圖1C中所揭露的各鏡片組合配置關係可知,本發明第一實施例的望遠變焦鏡頭包括有:一第一透鏡群組G1、一第二透鏡群組G2、一第三透鏡群組G3、及一第四透鏡群組G4,其中第一透鏡群組G1、第三透鏡群組G3、及第四透鏡群組G4皆具有正屈光能力,且第二透鏡群組G2具有負屈光能力。利用第一透鏡群組G1、第二透鏡群組G2、第三透鏡群組G3、及第四透鏡群組G4彼此之間的間隔變化(亦即藉由改變上述透鏡群組間沿著光軸Z方向的間距),即可改變此望遠變焦鏡頭的焦距。The telephoto zoom lens of the first embodiment of the present invention can be composed of 12 lenses. As shown in FIG. 1A to FIG. 1C, the telephoto zoom lens of the first embodiment of the present invention includes: a first lens group G1, a second lens group G2, and a third lens. a group G3 and a fourth lens group G4, wherein the first lens group G1, the third lens group G3, and the fourth lens group G4 each have positive refractive power, and the second lens group G2 has Negative refractive power. Using the first lens group G1, the second lens group G2, the third lens group G3, and the fourth lens group G4 to change from each other (that is, by changing the lens group along the optical axis The distance in the Z direction can be changed to change the focal length of this telephoto zoom lens.
在本發明的第一實施例中,第一透鏡群組G1包括有一第一透鏡L11、一第二透鏡L12、一第三透鏡L13、及一第四透鏡L14,其中第一透鏡L11、第二透鏡L12、第三透鏡L13、及第四透鏡L14可沿著光軸Z並從物體側朝向成像側的方向依序排列,且第一透鏡L11與第二透鏡L12可相互膠合以形成一雙膠合透鏡L1_12。再者,第二透鏡群組G2包括一第一透鏡L21、一第二透鏡L22、及一第三透鏡L23,其中第一透鏡L21、第二透鏡L22、及第三透鏡L23可沿著光軸Z並從物體側朝向成像側的方向依序排列,且第二透鏡L22與第三透鏡L23可相互膠合以形成一雙膠合透鏡L2_23。另外,第三透鏡群組G3包括一第一透鏡L31、一第二透鏡L32、及一第三透鏡L33,且第一透鏡L31、第二透鏡L32、及第三透鏡L33可沿著光軸Z並從物體側朝向成像側的方向依序排列。此外,第四透鏡群組G4包括一第一透鏡L41及一第二透鏡L42,其中第一透鏡L41與第二透鏡L42可相互膠合以形成一雙膠合透鏡L4_12,且第一透鏡L41及第二透鏡L42可沿著光軸Z並從物體側朝向成像側的方向依序排列。再者,望遠變焦鏡頭可更進一步包括:一沿著光軸Z且設置於第二透鏡群組G2及第三透鏡群組G3之間的光闌A,且光闌A的大小可隨著使用的需要而進行調整。In the first embodiment of the present invention, the first lens group G1 includes a first lens L 11 , a second lens L 12 , a third lens L 13 , and a fourth lens L 14 , wherein the first lens L 11 , the second lens L 12 , the third lens L 13 , and the fourth lens L 14 may be sequentially arranged along the optical axis Z and from the object side toward the imaging side, and the first lens L 11 and the second lens L 12 can be glued to each other to form a double cemented lens L 1_12 . Furthermore, the second lens group G2 includes a first lens L 21 , a second lens L 22 , and a third lens L 23 , wherein the first lens L 21 , the second lens L 22 , and the third lens L 23 may be sequentially arranged along the optical axis Z and from the object side toward the imaging side, and the second lens L 22 and the third lens L 23 may be cemented to each other to form a double cemented lens L 2_23 . In addition, the third lens group G3 includes a first lens L 31 , a second lens L 32 , and a third lens L 33 , and the first lens L 31 , the second lens L 32 , and the third lens L 33 . It may be sequentially arranged along the optical axis Z and from the object side toward the imaging side. In addition, the fourth lens group G4 includes a first lens L 41 and a second lens L 42 , wherein the first lens L 41 and the second lens L 42 are glued to each other to form a double cemented lens L 4_12 , and the first The lens L 41 and the second lens L 42 may be sequentially arranged along the optical axis Z and from the object side toward the imaging side. Furthermore, the telephoto zoom lens may further include: a pupil A disposed along the optical axis Z and disposed between the second lens group G2 and the third lens group G3, and the size of the aperture A may be used Adjust as needed.
換言之,上述具有正屈光能力的第一透鏡群組G1可固定於一第一預定位置上。上述具有負屈光能力的第二透鏡群組G2可隨著望遠變焦鏡頭的放大倍率的變動以沿著望遠變焦鏡頭的光軸Z來移動。上述具有正屈光能力的第三透鏡群組G3可固定於一第二預定位置上。上述具有正屈光能力的第四透鏡群組G4可沿著望遠變焦鏡頭的光軸Z來移動,以保持望遠變焦鏡頭所產生的成像面準確投射在一影像記錄器I上。此外,第一透鏡群組G1、第二透鏡群組G2、第三透鏡群組G3、及第四透鏡群組G4可沿著光軸Z並從望遠變焦鏡頭的物體側朝向成像側的方向依序排列。舉例來說,如下所述:In other words, the first lens group G1 having positive refractive power can be fixed at a first predetermined position. The second lens group G2 having the negative refractive power described above can be moved along the optical axis Z of the telephoto zoom lens as the magnification of the telephoto zoom lens changes. The third lens group G3 having positive refractive power can be fixed to a second predetermined position. The fourth lens group G4 having the positive refractive power can be moved along the optical axis Z of the telephoto zoom lens to keep the imaging surface generated by the telephoto zoom lens accurately projected on the image recorder 1. In addition, the first lens group G1, the second lens group G2, the third lens group G3, and the fourth lens group G4 may be along the optical axis Z and from the object side of the telephoto zoom lens toward the imaging side. Ordering. For example, as follows:
(1)、第一透鏡群組G1、第二透鏡群組G2、第三透鏡群組G3、及第四透鏡群組G4的焦距須符合下列兩組條件:(1) The focal lengths of the first lens group G1, the second lens group G2, the third lens group G3, and the fourth lens group G4 are subject to the following two conditions:
其中,F1為第一透鏡群組的焦距,F2為第二透鏡群組的焦距,F3為第三透鏡群組的焦距。Wherein F1 is the focal length of the first lens group, F2 is the focal length of the second lens group, and F3 is the focal length of the third lens group.
(2)、第一透鏡群組G1的焦距與第一透鏡群組G1到第三透鏡群組G3的距離須符合下列條件:(2) The distance between the focal length of the first lens group G1 and the first lens group G1 to the third lens group G3 is subject to the following conditions:
其中,d1-3為第一透鏡群組G1到第三透鏡群組G3的距離。Wherein d 1-3 are distances of the first lens group G1 to the third lens group G3.
(3)、第一透鏡群組G1的第三透鏡L13與第四透鏡L14皆可為一單片式彎月形透鏡,且第一透鏡群組G1的雙膠合透鏡L1_12及第三透鏡L13的焦距須符合下列條件:(3) The third lens L 13 and the fourth lens L 14 of the first lens group G1 may each be a single-piece meniscus lens, and the double lens L 1_12 and the third lens of the first lens group G1 The focal length of lens L 13 must meet the following conditions:
其中,F1_12為第一透鏡群組G1的雙膠合透鏡L1_12的焦距,F13為第一透鏡群組G1的第三透鏡L13的焦距。Wherein F 1_12 is the focal length of the double cemented lens L 1_12 of the first lens group G1, and F 13 is the focal length of the third lens L 13 of the first lens group G1.
(4)、第二透鏡群組G2的第一透鏡L21可為一單片式透鏡,且第二透鏡群組G2的第一透鏡L21與雙膠合透鏡L2_23的焦距須符合下列條件:(4) The first lens L 21 of the second lens group G2 may be a monolithic lens, and the focal length of the first lens L 21 of the second lens group G2 and the double cemented lens L 2_23 shall meet the following conditions:
其中,F21為第二透鏡群組G2的第一透鏡L21的焦距,F2_23為第二透鏡群組G2的雙膠合透鏡L2_23的焦距。Wherein F 21 is the focal length of the first lens L 21 of the second lens group G2, and F 2_23 is the focal length of the double cemented lens L 2_23 of the second lens group G2.
(5)、第三透鏡群組G3的焦距與第四透鏡群組G4的焦距須符合下列條件:(5) The focal length of the third lens group G3 and the focal length of the fourth lens group G4 are subject to the following conditions:
其中,F3為第三透鏡群組G3的焦距,F4為第四透鏡群組G4的焦距。Wherein F3 is the focal length of the third lens group G3, and F4 is the focal length of the fourth lens group G4.
請參閱圖1D至圖1F所示,圖1D表示第一實施例處於廣角型態時的縱向球差、像散與畸變的曲線圖;圖1E表示第一實施例處於標準位置型態時的縱向球差、像散與畸變的曲線圖;圖1F表示第一實施例處於望遠型態時的縱向球差、像散與畸變的曲線圖。Referring to FIG. 1D to FIG. 1F, FIG. 1D is a graph showing longitudinal spherical aberration, astigmatism and distortion when the first embodiment is in a wide-angle mode; and FIG. 1E is a vertical view showing the first embodiment in a standard positional state. A graph of spherical aberration, astigmatism, and distortion; Fig. 1F is a graph showing longitudinal spherical aberration, astigmatism, and distortion in the telescopic mode of the first embodiment.
本發明第一實施例的數據請參考下表所示,其中R表示各透鏡表面之曲率半徑(編號由S1至S24),D表示各光學表面之間的軸向距離(編號由D1至D24),nd表示各光學表面之折射率,Vd表示各光學表面的阿貝數(Abbe number),其表示材料的色散(chromatic dispersion)特性的數值。The data of the first embodiment of the present invention is shown in the following table, where R represents the radius of curvature of each lens surface (numbered from S1 to S24), and D represents the axial distance between the optical surfaces (numbered from D1 to D24). n d represents the refractive index of each optical surface, and V d represents the Abbe number of each optical surface, which represents the value of the chromatic dispersion characteristic of the material.
焦距、光圈值、視場角及位置D7、D12、D19與D22相對於不同變焦位置的關係分別如下所示:The relationship between focal length, aperture value, field of view and position D7, D12, D19 and D22 with respect to different zoom positions are as follows:
其中f表示對應於廣角端、標準端與望遠端的系統焦距,FNO表示對應於廣角端、標準端與望遠端的光圈值,FOV(ω)表示對應於廣角端、標準端與望遠端的視場角。Where f denotes the focal length of the system corresponding to the wide-angle end, the standard end and the telephoto end, F NO denotes the aperture value corresponding to the wide-angle end, the standard end and the telephoto end, and FOV(ω) denotes the angle of view corresponding to the wide-angle end, the standard end and the telephoto end .
再者,上述多個透鏡中,光學表面編號S18與S19為非球面,其非球面係數資料分別如下所示:Further, among the plurality of lenses, the optical surface numbers S18 and S19 are aspherical, and the aspherical coefficient data are as follows:
上述的非球面方程式可表示為:The above aspheric equation can be expressed as:
其中,Z值為弛垂(sag),C(=1/R)為球面曲率,K為圓錐常數,Y為與透鏡光軸Z垂直之高度,A4為4階非球面係數,A6為6階非球面係數,A8至A16的代表則依此類推。Wherein, Z is a sag, C (=1/R) is a spherical curvature, K is a conic constant, Y is a height perpendicular to the optical axis Z of the lens, A 4 is a fourth-order aspheric coefficient, and A 6 is The 6th-order aspheric coefficient, the representative of A 8 to A 16 and so on.
請參閱圖2A至圖2C所示,其分別顯示本發明第二實施例的望遠變焦鏡頭的各透鏡群組在廣角端(圖2A)、標準位置(圖2B)及望遠端(圖2C)三種型態下的透鏡配置示意圖。請參閱圖2D至圖2F所示,圖2D表示第二實施例處於廣角型態時的縱向球差、像散與畸變的曲線圖,圖2E表示第二實施例處於標準位置型態時的縱向球差、像散與畸變的曲線圖,圖2F表示第二實施例處於望遠型態時的縱向球差、像散與畸變的曲線圖。Please refer to FIG. 2A to FIG. 2C , which respectively show three lens groups of the telephoto zoom lens according to the second embodiment of the present invention at the wide angle end ( FIG. 2A ), the standard position ( FIG. 2B ) and the telephoto end ( FIG. 2C ). Schematic diagram of the lens configuration in the type. Referring to FIG. 2D to FIG. 2F, FIG. 2D is a graph showing longitudinal spherical aberration, astigmatism and distortion in the wide-angle mode of the second embodiment, and FIG. 2E is a vertical view showing the second embodiment in the standard positional state. A graph of spherical aberration, astigmatism, and distortion, and FIG. 2F is a graph showing longitudinal spherical aberration, astigmatism, and distortion in the telescopic mode of the second embodiment.
本發明第二實施例的數據請參考下表所示:Please refer to the following table for the data of the second embodiment of the present invention:
焦距、光圈值、視場角及位置D7、D12、D19與D22相對於不同變焦位置的關係分別如下所示:The relationship between focal length, aperture value, field of view and position D7, D12, D19 and D22 with respect to different zoom positions are as follows:
再者,上述多個透鏡中,光學表面編號S18與S19為非球面,且非球面方程式與本發明第一實施例相同。第二實施例的非球面係數資料分別如下所示:Further, among the plurality of lenses, the optical surface numbers S18 and S19 are aspherical, and the aspherical equation is the same as that of the first embodiment of the present invention. The aspheric coefficient data of the second embodiment are as follows:
綜上所述,本發明的有益效果至少包括有:In summary, the beneficial effects of the present invention include at least:
1、本發明可提供一種高變倍比、長焦距、且高成像品質的取像用變焦鏡頭。1. The present invention can provide a zoom lens for image capturing with high zoom ratio, long focal length, and high image quality.
2、本發明能夠設計且製造一種高品質、第一透鏡群組有適當的輻面直徑、且放大倍率可達20X的取像用變焦鏡頭。2. The present invention is capable of designing and manufacturing a high-quality, first lens group having an appropriate radial diameter and an imaging zoom lens having a magnification of up to 20X.
以上所述僅為本發明之較佳可行實施例,非因此侷限本發明之專利範圍,故舉凡運用本發明說明書及圖式內容所為之等效技術變化,均包含於本發明之範圍內。The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalents of the invention are included in the scope of the invention.
G1...第一透鏡群組G1. . . First lens group
L11...第一透鏡L 11 . . . First lens
L12...第二透鏡L 12 . . . Second lens
L1_12...雙膠合透鏡L 1_12 . . . Double cemented lens
L13...第三透鏡L 13 . . . Third lens
L14...第四透鏡L 14 . . . Fourth lens
G2...第二透鏡群組G2. . . Second lens group
L21...第一透鏡L 21 . . . First lens
L22...第二透鏡L 22 . . . Second lens
L23...第三透鏡L 23 . . . Third lens
L2_23...雙膠合透鏡L 2_23 . . . Double cemented lens
G3...第三透鏡群組G3. . . Third lens group
L31...第一透鏡L 31 . . . First lens
L32...第二透鏡L 32 . . . Second lens
L33...第三透鏡L 33 . . . Third lens
G4...第四透鏡群組G4. . . Fourth lens group
L41...第一透鏡L 41 . . . First lens
L42...第二透鏡L 42 . . . Second lens
L4_12...雙膠合透鏡L 4_12 . . . Double cemented lens
S1至S24...光學表面S1 to S24. . . Optical surface
D1至D24...軸向距離D1 to D24. . . Axial distance
A...光闌A. . . Light
I...影像記錄器I. . . Image recorder
Z...光軸Z. . . Optical axis
圖1A顯示本發明第一實施例的望遠變焦鏡頭的各透鏡群組在廣角端型態下的透鏡配置示意圖。1A is a view showing a lens configuration of each lens group of a telephoto zoom lens according to a first embodiment of the present invention in a wide-angle end state.
圖1B顯示本發明第一實施例的望遠變焦鏡頭的各透鏡群組在標準位置型態下的透鏡配置示意圖。FIG. 1B is a view showing a lens configuration of each lens group of the telephoto zoom lens according to the first embodiment of the present invention in a standard positional state.
圖1C顯示本發明第一實施例的望遠變焦鏡頭的各透鏡群組在望遠端型態下的透鏡配置示意圖。FIG. 1C is a view showing a lens configuration of each lens group of the telephoto zoom lens according to the first embodiment of the present invention in a telephoto end mode.
圖1D至圖1F分別表示第一實施例處於廣角型態時、標準位置型態時及望遠型態時的縱向球差、像散與畸變的曲線圖。1D to 1F are graphs showing longitudinal spherical aberration, astigmatism, and distortion in the wide-angle mode, the standard position type, and the telephoto mode, respectively, of the first embodiment.
圖2A顯示本發明第二實施例的望遠變焦鏡頭的各透鏡群組在廣角端型態下的透鏡配置示意圖。2A is a view showing a lens configuration of each lens group of the telephoto zoom lens according to the second embodiment of the present invention in a wide-angle end state.
圖2B顯示本發明第二實施例的望遠變焦鏡頭的各透鏡群組在標準位置型態下的透鏡配置示意圖。2B is a view showing a lens configuration of each lens group of the telephoto zoom lens according to the second embodiment of the present invention in a standard position mode.
圖2C顯示本發明第二實施例的望遠變焦鏡頭的各透鏡群組在望遠端型態下的透鏡配置示意圖。2C is a schematic view showing the lens configuration of each lens group of the telephoto zoom lens according to the second embodiment of the present invention in a telephoto end mode.
圖2D至圖2F分別表示第二實施例處於廣角型態時、標準位置型態時及望遠型態時的縱向球差、像散與畸變的曲線圖。2D to 2F are graphs showing longitudinal spherical aberration, astigmatism, and distortion in the wide-angle mode, the standard position type, and the telephoto mode, respectively, of the second embodiment.
G1...第一透鏡群組G1. . . First lens group
L11...第一透鏡L 11 . . . First lens
L12...第二透鏡L 12 . . . Second lens
L1_12...雙膠合透鏡L 1_12 . . . Double cemented lens
L13...第三透鏡L 13 . . . Third lens
L14...第四透鏡L 14 . . . Fourth lens
G2...第二透鏡群組G2. . . Second lens group
L21...第一透鏡L 21 . . . First lens
L22...第二透鏡L 22 . . . Second lens
L23...第三透鏡L 23 . . . Third lens
L2_23...雙膠合透鏡L 2_23 . . . Double cemented lens
G3...第三透鏡群組G3. . . Third lens group
L31...第一透鏡L 31 . . . First lens
L32...第二透鏡L 32 . . . Second lens
L33...第三透鏡L 33 . . . Third lens
G4...第四透鏡群組G4. . . Fourth lens group
L41...第一透鏡L 41 . . . First lens
L42...第二透鏡L 42 . . . Second lens
L4_12...雙膠合透鏡L 4_12 . . . Double cemented lens
D1至D24...軸向距離D1 to D24. . . Axial distance
A...光闌A. . . Light
I...影像記錄器I. . . Image recorder
Z...光軸Z. . . Optical axis
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW101100632A TWI476440B (en) | 2012-01-06 | 2012-01-06 | Telephoto zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW101100632A TWI476440B (en) | 2012-01-06 | 2012-01-06 | Telephoto zoom lens |
Publications (2)
Publication Number | Publication Date |
---|---|
TW201329504A true TW201329504A (en) | 2013-07-16 |
TWI476440B TWI476440B (en) | 2015-03-11 |
Family
ID=49225711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW101100632A TWI476440B (en) | 2012-01-06 | 2012-01-06 | Telephoto zoom lens |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI476440B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105445916A (en) * | 2015-12-25 | 2016-03-30 | 中山联合光电科技股份有限公司 | High-magnification and short-focal end infrared confocal zooming optical system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001025833A1 (en) * | 1999-10-07 | 2001-04-12 | Matsushita Electric Industrial Co., Ltd. | Zoom lens and video camera comprising the same |
US6710933B2 (en) * | 2000-05-31 | 2004-03-23 | Matsushita Electric Industrial Co., Ltd. | Zoom lens and video camera comprising the same |
US6982835B2 (en) * | 2003-02-05 | 2006-01-03 | Fujinon Corporation | Four-group zoom lens |
CN100410715C (en) * | 2005-03-31 | 2008-08-13 | 财团法人工业技术研究院 | Zooming lens |
EP1881357B1 (en) * | 2006-07-20 | 2009-09-16 | Nikon Corporation | Vibration-proof telephoto zoom lens having four lens groups |
JP4949897B2 (en) * | 2007-03-09 | 2012-06-13 | 富士フイルム株式会社 | Zoom lens with image stabilization function and imaging device |
JP5588824B2 (en) * | 2009-10-30 | 2014-09-10 | 日東光学株式会社 | Lens system |
TW201116848A (en) * | 2009-11-12 | 2011-05-16 | Optronics Technology Inc A | Zoom lens |
JP5574225B2 (en) * | 2010-03-18 | 2014-08-20 | 株式会社リコー | Zoom lens, imaging device, and information device |
-
2012
- 2012-01-06 TW TW101100632A patent/TWI476440B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105445916A (en) * | 2015-12-25 | 2016-03-30 | 中山联合光电科技股份有限公司 | High-magnification and short-focal end infrared confocal zooming optical system |
Also Published As
Publication number | Publication date |
---|---|
TWI476440B (en) | 2015-03-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6418894B2 (en) | Optical system, imaging device, and optical apparatus | |
KR102052124B1 (en) | Fish eye lens system and photographing apparatus having the same | |
JP6685944B2 (en) | Zoom lens and imaging device | |
JP6814931B2 (en) | Zoom lens system, interchangeable lens device and camera system with zoom lens system, imaging device with zoom lens system | |
KR101844509B1 (en) | Zoon lens and photographing apparatus | |
KR101932722B1 (en) | Zoom lens and photographing apparatus having the same | |
US20120229693A1 (en) | Zoom Lens System, Imaging Device and Camera | |
KR20150087059A (en) | Wide angle lens system | |
JP2008164724A (en) | Zoom lens and imaging apparatus | |
TWI381188B (en) | Zoom lens | |
JP2009128492A (en) | High power zoom lens and imaging device | |
US8736973B2 (en) | Zoom lens and image pickup apparatus equipped with zoom lens | |
US20120229692A1 (en) | Zoom Lens System, Imaging Device and Camera | |
KR20160144847A (en) | Zoom lens system | |
CN107436486B (en) | Zoom lens system | |
CN106461921A (en) | Variable power optical system, optical device, and method for manufacturing variable power optical system | |
US9864176B2 (en) | Zoom lens having wide-angle and telephoto modes and photographing apparatus including the same | |
US20120229902A1 (en) | Zoom Lens System, Imaging Device and Camera | |
KR20150069925A (en) | Zoom lens system | |
US20120229903A1 (en) | Zoom Lens System, Imaging Device and Camera | |
CN105652426B (en) | Zoom lens and photographic device | |
KR101880633B1 (en) | Zoom lens and photographing device having the same | |
JP2017219649A (en) | Imaging optical system and optical apparatus including the same | |
US9261681B2 (en) | Zoom lens and image pickup apparatus including the same | |
JP2013120326A (en) | Zoom lens and imaging apparatus with the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |