JP3063035B2 - Zoom lens - Google Patents
Zoom lensInfo
- Publication number
- JP3063035B2 JP3063035B2 JP2211471A JP21147190A JP3063035B2 JP 3063035 B2 JP3063035 B2 JP 3063035B2 JP 2211471 A JP2211471 A JP 2211471A JP 21147190 A JP21147190 A JP 21147190A JP 3063035 B2 JP3063035 B2 JP 3063035B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- group
- variable
- focal length
- object side
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、広角から望遠までの広い変倍域を有する変
倍レンズに関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable power lens having a wide variable power range from a wide angle to a telephoto.
［従来の技術］ 近年、ズームレンズに対する需要が非常に大きくなっ
てきており、中でも広角から望遠までの広い変倍域を有
するズームレンズに対する需要が増えており、このよう
なズームレンズに対する小型化の要求が強くなってきて
いる。[Prior Art] In recent years, the demand for zoom lenses has become extremely large, and in particular, the demand for zoom lenses having a wide zoom range from wide angle to telephoto has increased. The demands are getting stronger.
また近年、レンズ系の小型化の手法として、レンズ系
の全長を短くすることに対しては、不使用時に光学系を
沈胴させることにより小型化をはかる手法が用いられて
いる。しかしレンズ系の太さに対しては、このようなメ
カ的手法を用いることが出来ず、光学設計によるレンズ
の小型化が望まれている。In recent years, as a technique for reducing the size of a lens system, a technique of reducing the overall length of the lens system by collapsing the optical system when not in use has been used. However, such a mechanical method cannot be used for the thickness of the lens system, and it is desired to reduce the size of the lens by optical design.
従来、広角から望遠までの広い変倍域を有するズーム
レンズとしては、特開昭61−260210号広報に記載された
ものが知られている。この従来例は、物体側より順に
正，負，正，正の屈折力を有する四つの群で構成されて
いる。しかし第２群における後側主点位置が第２群の最
も像面側の面より大幅に第２群の中へ入り込んでいるた
め、第２群のパワーを強くすると、望遠端で第２群と第
３群との干渉が生じ、レンズ系を構成出来なくなり、そ
のため全長を短縮できない。又第２群における後側主点
位置が、第２群の最も像側の面より大幅に第２群の中へ
入り込んでいるため、第２群と第３群の望遠端での間隔
を大きくとれず、明るさ絞りは、第３群と第４群の間に
配置せざるを得なくなり、第１群のレンズの外径を小さ
くすることが出来ない。2. Description of the Related Art Conventionally, as a zoom lens having a wide zoom range from a wide angle to a telephoto, there is known a zoom lens described in JP-A-61-260210. This conventional example is composed of four groups having positive, negative, positive, and positive refractive power in order from the object side. However, since the rear principal point position in the second lens unit enters the second lens unit significantly more than the surface closest to the image plane of the second lens unit, if the power of the second lens unit is increased, the second lens unit will not move at the telephoto end. And the third lens unit interfere with each other, making it impossible to form a lens system. Therefore, the overall length cannot be reduced. Also, since the rear principal point position in the second lens group enters the second lens group much more than the most image-side surface of the second lens group, the distance between the second lens group and the third lens group at the telephoto end is increased. Therefore, the aperture stop has to be disposed between the third group and the fourth group, and the outer diameter of the lens of the first group cannot be reduced.
［発明が解決しようとする課題］ 本発明は、第２群の後側主点位置を適切な値にするこ
とによって第２群と第３群との間を広くとり、第２群と
第３群との間に明るさ絞りを置くことにより、全長が短
く第１群におけるレンズ外径の小さな広角から望遠まで
の広い変倍域を有する変倍レンズを提供することを目的
とするものである。[Problems to be Solved by the Invention] In the present invention, the distance between the second group and the third group is widened by setting the position of the rear principal point of the second group to an appropriate value. It is an object of the present invention to provide a variable power lens having a wide zoom range from a wide angle to a telephoto lens having a short overall length and a small lens outer diameter in the first group by disposing a brightness stop between the lens group and the first lens group. .
［課題を解決するための手段］ 本発明の変倍レンズは、物体側より順に正の屈折力を
有する第１群と、負の屈折力を有する第２群と、それに
続く群が少なくとも一つの正の屈折力を有する群からな
り、第２群より像側に位置する群の物体側に明るさ絞り
を有し、前記第２群が物体側より順に像側に強い曲面を
持つ負レンズよりなる第１成分と、負レンズと正レンズ
と接合レンズよりなる第２成分と、物体側に強い曲面を
持つ負レンズよりなる第３成分と、物体側に強い曲面を
持つ正のメニスカレンズよりなる第４成分とからなり、
かつ次の条件（１），（２），（３）を満足することを
特徴とするものである。[Means for Solving the Problems] The variable power lens according to the present invention includes, in order from the object side, a first group having a positive refractive power, a second group having a negative refractive power, and at least one subsequent group. A negative lens having a group having positive refractive power, having a brightness stop on the object side of the group located on the image side of the second group, and the second group having a strong curved surface on the image side in order from the object side; A first component comprising a negative lens, a positive lens and a cemented lens, a third component comprising a negative lens having a strong curved surface on the object side, and a positive menisca lens having a strong curved surface on the object side. Consisting of the fourth component,
In addition, the following conditions (1), (2) and (3) are satisfied.
（１） 1.5＜f1/fW＜3.0 （２） 0.1＜H2/f2＜0.425 （３） 0.6＜fR/fW＜0.9 ただしfWは広角端における全系の焦点距離、f1は第１
群の焦点距離、f2は第２群の焦点距離、fRは第３群以降
の群の合成焦点距離、H2は第２群の最終面から測った後
側主点までの距離である。 (1) 1.5 <f 1 / f W <3.0 (2) 0.1 <H 2 / f 2 <0.425 (3) 0.6 <f R / f W <0.9 However f W is the focal length of the entire system at the wide angle end, f 1 is the first
The focal length of the group, f 2 is the focal length of the second group, the f R composite focal length of the group after the third group, H 2 is the distance to the rear principal point measured from the last surface of the second group .
条件（１）は、第１群の焦点距離に関する条件で、上
限を超えると収差補正上は有利であるが、第１群のレン
ズ外径の大型化と明るさ絞りの大型化をまねき、レンズ
系のコンパクト化を達成し得ない。又下限を超えると第
１群で発生する収差が大になり、他の群では補正出来な
くなる。The condition (1) is a condition relating to the focal length of the first lens unit. If the upper limit is exceeded, it is advantageous for aberration correction. However, the lens diameter of the first lens unit and the aperture of the aperture stop become large, and The system cannot be made compact. On the other hand, if the lower limit is exceeded, the aberration generated in the first lens unit becomes large and cannot be corrected in the other lens units.
条件（２）は、第２群の後側主点位置に関する条件で
あり、この条件の上限を越えると望遠端での第２群と第
３群の間隔を広くとることが出来なくなり、第２群と第
３群の間に明るさ絞りを配置することが出来なくなり、
第１群の外径を小さくすることが困難になり、レンズ系
のコンパクト化に反する。又第２群中の第１成分である
負レンズのパワーが強くなり、広角時の歪曲収差の補正
が困難になる。又下限を越えると第２群で負担すべき負
のパワーの大部分を負担することになる第２群中の第４
成分である負レンズのパワーが強くなりすぎ諸収差をバ
ランス良く補正出来ない。The condition (2) is a condition relating to the position of the rear principal point of the second lens unit. If the upper limit of this condition is exceeded, the distance between the second lens unit and the third lens unit at the telephoto end cannot be widened. It becomes impossible to arrange a brightness stop between the group and the third group,
It becomes difficult to reduce the outer diameter of the first lens unit, which is against the compactness of the lens system. In addition, the power of the negative lens, which is the first component in the second lens unit, increases, and it becomes difficult to correct distortion at the time of wide angle. If the lower limit is exceeded, most of the negative power that should be borne by the second group will be borne.
The power of the negative lens, which is a component, is too strong to correct various aberrations in a well-balanced manner.
条件（３）は、第３群以降の群の広角端における合成
焦点距離に関する条件であり、この条件の上限を越える
と、収差補正上は有利であるが第３群以降の構成長が長
くなりコンパクト化に反する。又下限を越えると第３群
以降で発生する収差が大になり、更に第３群以降の群の
焦点距離が短くなるので望遠端における第２群と第３群
の間隔を明るさ絞りを配置するのに充分な広さにするこ
とが困難になる。Condition (3) is a condition relating to the combined focal length at the wide-angle end of the third and subsequent units. If the upper limit of this condition is exceeded, it is advantageous in terms of aberration correction, but the configuration length of the third and subsequent units becomes long. Contrary to compactness. If the lower limit is exceeded, the aberration generated in the third and subsequent units increases, and the focal length of the third and subsequent units becomes shorter. Therefore, the aperture between the second and third units at the telephoto end is provided with a brightness stop. It will be difficult to make it large enough to do.
収差補正上は、第２群中の第２成分である接合レンズ
は、分離した方が有利であるが、加工組立を含めて総合
的に考えると前記第２成分が分離されたことによって生
ずる空気間隔の制作誤差や正レンズの偏芯が性能に対し
て非常に悪影響を与えるため本発明のように接合レンズ
にするのがよい。In terms of aberration correction, it is advantageous to separate the cemented lens, which is the second component in the second group. However, considering comprehensively including processing and assembly, the air generated by the separation of the second component is considered. Since the production error of the interval and the eccentricity of the positive lens greatly affect the performance, it is preferable to use a cemented lens as in the present invention.
本発明の変倍レンズにおいて次の条件（４），（５）
を満足することが望ましい。In the zoom lens according to the present invention, the following conditions (4) and (5) are satisfied.
It is desirable to satisfy
（４） 0.4＜|f2|/fW＜0.6 （５） 0.4＜（β2T/β2W）/z＜0.7 ただしβ2Tは望遠端における第２群の横倍率、β2Wは
広角端における第２群の横倍率、ｚは変倍比である。(4) 0.4 <| f 2 | / f W <0.6 (5) 0.4 <(β 2T / β 2W ) / z <0.7 where β 2T is the lateral magnification of the second lens unit at the telephoto end, and β 2W is the wide magnification at the wide angle end. The lateral magnification of the second group, z, is the zoom ratio.
条件（４）は、第２群の焦点距離に関する条件であ
り、上限を越えると第２群の構成長が長くなりレンズ系
のコンパクト化に反する。下限を越えるとコンパクト化
には有利であるが望遠側での球面収差の補正が困難にな
るとともに倍率の色収差の補正も困難になる。The condition (4) is a condition relating to the focal length of the second unit. If the upper limit of the condition (4) is exceeded, the configuration length of the second unit becomes long, which is against the compactness of the lens system. Exceeding the lower limit is advantageous for compactness, but makes it difficult to correct spherical aberration on the telephoto side and also makes it difficult to correct chromatic aberration of magnification.
条件（５）は、第２群の変倍に寄与する負担量に関す
る条件であり、上限を越えると第２群で発生する収差が
大になり他の群で補正出来なくなる。下限を越えると収
差補正上は有利になるが、第２群の移動量あるいは第２
群の前後に必要なスペースが大きくなりコンパクト化に
反する。The condition (5) is a condition relating to the amount of load that contributes to zooming of the second lens unit. If the upper limit is exceeded, the aberration that occurs in the second lens unit becomes large, and correction cannot be performed by other lens units. Beyond the lower limit, it is advantageous for aberration correction, but the movement amount of the second unit or the second
The space required before and after the group is large, which is against compactness.
［実施例］ 次に本発明の変倍レンズの各実施例を示す。Examples Next, examples of the variable power lens according to the present invention will be described.
実施例１ ｆ＝33.2〜61.5〜101.4,F/4.6〜5.2〜5.8 ２ω＝61.6゜〜24.0゜ r1＝−943.6189 d1＝2.135 n1＝1.84666 ν１＝23.88 r2＝86.0921 d2＝7.339 n2＝1.67000 ν２＝57.33 r3＝−98.2377 d3＝0.067 r4＝31.5072 d4＝3.881 n3＝1.69680 ν３＝56.49 r5＝80.1834 d5＝D1（可変） r6＝97.9642 d6＝1.383 n4＝1.72916 ν４＝54.68 r7＝16.1944 d7＝4.036 r8＝−31.4026 d8＝1.118 n5＝1.77250 ν５＝49.66 r9＝−49.1431 d9＝1.891 n6＝1.80518 ν６＝25.43 r10＝−23.7168 d10＝1.199 r11＝−19.3917 d11＝1.018 n7＝1.72916 ν７＝54.68 r12＝249.0968 d12＝0.102 r13＝44.0305 d13＝1.579 n8＝1.84666 ν８＝23.78 r14＝250.8828 d14＝D2（可変） r15＝∞（絞り） d15＝1.000 r16＝25.6942 d16＝2.997 n9＝1.67000 ν９＝57.33 r17＝−79.0127 d17＝0.138 r18＝40.6807 d18＝6.005 n10＝1.51633 ν10＝64.15 r19＝−16.8133 d19＝2.472 n11＝1.80727 ν11＝31.68 r20＝77.4650 d20＝D3（可変） r21＝54.4349 d21＝3.268 n12＝1.72000 ν12＝41.98 r22＝−23.7173 d22＝3.666 r23＝−25.6776（非球面） d23＝0.600 n13＝1.52492 ν13＝57.50 r24＝−19.6491 d24＝1.817 n14＝1.80610 ν14＝40.95 r25＝403.8889 非球面係数 Ｅ＝−0.50719×10-4,F＝−0.99839×10-7 Ｇ＝−0.14629×10-9,H＝−0.14944×10-11 ｆ 33.2 61.5 101.4 D1 1.0477 8.0656 13.8752 D2 18.3191 9.2691 1.2002 D3 6.9260 5.5479 5.0589 f1/fW＝1.525,H2/f2＝0.377 fR/fW＝0.761,|f2|/fW＝0.504 （β2T/β2W）/z＝0.606 実施例２ ｆ＝33.2〜61.5〜101.4,F/4.6〜5.2〜5.8 ２ω＝61.6゜〜24.0゜ r1＝465.9825 d1＝2.135 n1＝1.84666 ν１＝23.88 r2＝70.2591 d2＝7.339 n2＝1.67000 ν２＝57.33 r3＝−193.3109 d3＝0.067 r4＝36.3243 d4＝4.123 n3＝1.69680 ν３＝56.49 r5＝143.6573 d5＝D1（可変） r6＝152.7897 d6＝1.383 n4＝1.72916 ν４＝54.68 r7＝17.0438 d7＝3.936 r8＝−35.3533 d8＝1.118 n5＝1.77250 ν５＝49.66 r9＝−47.0208 d9＝1.839 n6＝1.80518 ν６＝25.43 r10＝−24.1761 d10＝1.427 r11＝−20.2612 d11＝1.017 n7＝1.72916 ν７＝54.68 r12＝133.0120 d12＝0.102 r13＝41.0614 d13＝1.570 n8＝1.84666 ν８＝23.78 r14＝192.3030 d14＝D2（可変） r15＝∞（絞り） d15＝1.000 r16＝23.7162 d16＝2.821 n9＝1.67000 ν９＝57.33 r17＝−126.1440 d17＝0.138 r18＝35.7456 d18＝6.005 n10＝1.51633 ν10＝64.15 r19＝−17.3058 d19＝2.472 n11＝1.80727 ν11＝31.68 r20＝58.2517 d20＝D3（可変） r21＝45.8928 d21＝3.366 n12＝1.72000 ν12＝41.98 r22＝−23.4434 d22＝3.666 r23＝−22.0958（非球面） d23＝0.600 n13＝1.52492 ν13＝57.50 r24＝−17.6069 d24＝1.817 n14＝1.80610 ν14＝40.95 r25＝−406.1037 非球面係数 Ｅ＝−0.51933×10-4,F＝−0.65820×10-7 Ｇ＝−0.86158×10-9,H＝0.34818×10-11 ｆ 33.2 61.5 101.4 D1 0.8910 7.9737 14.8910 D2 18.1983 9.1862 1.2247 D3 6.9695 5.6447 5.1758 f1/fW＝1.588,H2/f2＝0.370 fR/fW＝0.762,|f2|/fW＝0.511 （β2T/β2W）/z＝0.621 実施例３ ｆ＝36.2〜60〜101.3,F/4.6〜4.9〜5.8 ２ω＝61.6゜〜24.0゜ r1＝−1511.3485 d1＝2.135 n1＝1.84666 ν１＝23.88 r2＝81.5876 d2＝7.339 n2＝1.67000 ν２＝57.33 r3＝−123.5791 d3＝0.067 r4＝33.6654 d4＝3.285 n3＝1.69680 ν３＝56.49 r5＝100.3884 d5＝D1（可変） r6＝290.2541 d6＝1.383 n4＝1.72916 ν４＝54.68 r7＝16.7106 d7＝4.443 r8＝−94.2977 d8＝1.118 n5＝1.77250 ν５＝49.66 r9＝76.9948 d9＝3.467 n6＝1.80518 ν６＝25.43 r10＝−57.2870 d10＝1.637 r11＝−32.1564 d11＝1.017 n7＝1.72916 ν７＝54.68 r12＝144.2841 d12＝0.102 r13＝33.1477 d13＝1.921 n8＝1.84666 ν８＝23.78 r14＝60.1784 d14＝D2（可変） r15＝∞（絞り） d15＝1.000 r16＝22.2456 d16＝3.175 n9＝1.67000 ν９＝57.33 r17＝−140.9720 d17＝0.138 r18＝32.9028 d18＝6.005 n10＝1.51633 ν10＝64.15 r19＝−16.9694 d19＝2.472 n11＝1.80726 ν11 r20＝58.2390 d20＝D3（可変） r21＝46.7075 d21＝3.033 n12＝1.72000 ν12＝41.98 r22＝−22.7570 d22＝3.666 r23＝−18.9133（非球面） d23＝0.100 n13＝1.52492 ν13＝57.50 r24＝−16.9656 d24＝1.817 n14＝1.80610 ν14＝40.95 r25＝−416.4876 非球面係数 Ｅ＝−0.54431×10-4,F＝−0.22145×10-6 Ｇ＝ 0.21549×10-8,H＝−0.21677×10-10 ｆ 36.2 60 101.3 D1 0.5000 8.3563 16.2610 D2 16.2610 8.4047 0.5000 D3 6.6915 5.2254 4.8963 f1/fW＝1.623,H2/f2＝0.420 fR/fW＝0.734,|f2|/fW＝0.510 （β2T/β2W）/z＝0.556 実施例４ ｆ＝36.2〜60.5〜101.3,F/4.6〜5.2〜5.8 ２ω＝61.6゜〜24.0゜ r1＝453.5114 d1＝1.800 n1＝1.84666 ν１＝23.88 r2＝70.8411 d2＝4.747 n2＝1.67000 ν２＝57.33 r3＝−164.5923 d3＝0.100 r4＝39.8491 d4＝3.710 n3＝1.69680 ν３＝56.49 r5＝120.4881 d5＝D1（可変） r6＝154.5767 d6＝1.200 n4＝1.72916 ν４＝54.68 r7＝16.6677 d7＝2.612 r8＝−44.8814 d8＝1.300 n5＝1.77250 ν５＝49.66 r9＝−56.3476 d9＝2.158 n6＝1.80518 ν６＝25.43 r10＝−22.3774 d10＝0.834 r11＝−19.4212 d11＝1.200 n7＝1.72916 ν７＝54.68 r12＝83.6992 d12＝0.100 r13＝30.5113 d13＝1.824 n8＝1.84666 ν８＝23.78 r14＝70.8210 d14＝D2（可変） r15＝∞（絞り） d15＝1.000 r16＝31.0203 d16＝2.291 n9＝1.71300 ν９＝53.84 r17＝−3553.0120 d17＝0.512 r18＝21.4102 d18＝5.023 n10＝1.50378 ν10＝66.81 r19＝−56.4527 d19＝1.288 r20＝−31.2296 d20＝1.200 n11＝1.80518 ν11＝25.43 r21＝33.7970 d21＝D3（可変） r22＝33.3989 d22＝4.292 n12＝1.72000 ν12＝41.98 r23＝−27.3155 d23＝4.070 r24＝−34.9021（非球面） d24＝0.500 n13＝1.52492 ν13＝57.50 r25＝−21.5997 d25＝2.022 n14＝1.80610 ν14＝40.95 r26＝−506.5091 非球面系数 Ｅ＝−0.50588×10-4,F＝−0.81950×10-7 Ｇ＝ 0.49907×10-9,H＝ 0.24360×10-11 ｆ 36.2 60.5 101.3 D1 0.6202 9.9600 18.6002 D2 16.6632 8.9430 1.5359 D3 8.4619 6.8423 5.6092 f1/fW＝1.791,H2/f2＝0.308 fR/fW＝0.817,|f2|/fW＝0.529 （β2T/β2W）/z＝0.555 実施例５ ｆ＝39.3〜67.5〜116,F/4.6〜5.2〜5.8 ２ω＝58.6゜〜21.0゜ r1＝159.2336 d1＝1.800 n1＝1.84666 ν１＝23.88 r2＝48.6828 d2＝3.959 n2＝1.67000 ν２＝57.33 r3＝−1300.5754 d3＝0.100 r4＝40.7642 d4＝3.550 n3＝1.69680 ν３＝56.49 r5＝239.2228 d5＝D1（可変） r6＝4563.5008 d6＝1.374 n4＝1.77250 ν４＝49.66 r7＝21.9110 d7＝2.937 r8＝−110.9826 d8＝1.162 n5＝1.77250 ν５＝49.66 r9＝25.9842 d9＝3.264 n6＝1.84666 ν６＝23.78 r10＝−74.7565 d10＝0.801 r11＝−32.7831 d11＝1.162 n7＝1.77250 ν７＝49.66 r12＝74.4241 d12＝0.158 r13＝36.4070 d13＝2.139 n8＝1.59270 ν８＝35.29 r14＝76.3043 d14＝D2（可変） r15＝∞（絞り） d15＝1.000 r16＝27.8678 d16＝2.679 n9＝1.71300 ν９＝53.84 r17＝−39.9215 d17＝0.100 r18＝34.6887 d18＝2.577 n10＝1.50378 ν10＝66.81 r19＝−248.8153 d19＝0.800 r20＝−30.7503 d20＝1.200 n11＝1.80518 ν11＝25.43 r21＝61.2149 d21＝D3（可変） r22＝42.9845 d22＝15.816 n12＝1.72000 ν12＝41.98 r23＝−23.9117 d23＝2.000 r24＝−28.1493（非球面） d24＝0.500 n13＝1.52492 ν13＝57.50 r25＝−18.3688 d25＝1.841 n14＝1.80610 ν14＝40.95 r26＝198.6050 非球面係数 Ｅ＝−0.42783×10-4,F＝−0.22003×10-6 Ｇ＝ 0.24449×10-8,H＝−0.17024×10-10 Ｆ 39.3 67.5 116 D1＝ 0.8000 9.7600 17.8866 D2 15.0152 7.9270 1.000 D3 7.7737 3.8749 1.0040 f1/fW＝1.553,H2/f2＝0.331 fR/fW＝0.665,|f2|/fW＝0.443 （β2T/β2W）/z＝0.538 実施例６ ｆ＝36.3〜68.8〜131.5,F/4.6〜5.4〜5.8 ２ω＝61.6゜〜18.6゜ r1＝103.6136 d1＝1.950 n1＝1.80518 ν１＝25.43 r2＝51.9451 d2＝5.735 n2＝1.60311 ν２＝60.70 r3＝−300.8593 d3＝0.150 r4＝32.9012 d4＝4.184 n3＝1.49700 ν３＝81.61 r5＝72.2838 d5＝D1（可変） r6＝72.0113 d6＝1.300 n4＝1.77250 ν４＝49.66 r7＝15.8102 d7＝4.289 r8＝278.4020 d8＝1.326 n5＝1.77250 ν５＝49.66 r9＝21.5753 d9＝3.174 n6＝1.84666 ν６＝23.78 r10＝−430.6642 d10＝1.198 r11＝−27.5977 d11＝1.100 n7＝1.77250 ν７＝49.66 r12＝57.0953 d12＝0.150 r13＝29.3506 d13＝1.831 n8＝1.59270 ν８＝35.29 r14＝91.4194 d14＝D2（可変） r15＝∞（絞り） d15＝1.100 r16＝56.5933 d16＝2.516 n9＝1.71300 ν９＝53.84 r17＝−44.6275 d17＝0.150 r18＝30.4398 d18＝2.738 n10＝1.50378 ν10＝66.81 r19＝−474.5345 d19＝0.981 r20＝−35.0512 d20＝1.200 n11＝1.78470 ν11＝26.22 r21＝369.0560 d21＝D3（可変） r22＝297.5792 d22＝2.193 n12＝1.74950 ν12＝35.27 r23＝−58.9335 d23＝0.150 r24＝50.1546 d24＝1.766 n13＝1.78470 ν13＝26.22 r25＝24.0254 d25＝1.814 r26＝529.2978 d26＝2.378 n14＝1.48749 ν14＝70.20 r27＝−36.6566 d27＝0.150 r28＝20.8026 d28＝2.793 n15＝1.51823 ν15＝58.96 r29＝22.5439 d29＝D4（可変） r30＝339.9183 d30＝3.882 n16＝1.60717 ν16＝40.26 r31＝−32.0997 d31＝1.879 r32＝−27.2472 d32＝1.500 n17＝1.78590 ν17＝44.18 r33＝−146.5891 ｆ 36.3 68.8 131.5 D1 0.7000 12.7269 25.1507 D2 15.7908 8.1844 1.4000 D3 8.7760 3.5689 0.6200 D4 3.6244 18.3667 26.6261 f1/fW＝1.925,H2/f2＝0.380 fR/fW＝0.778,|f2|/fW＝0.434 （β2T/β2W）/z＝0.449 実施例７ ｆ＝36.2〜72.2〜144.7,F/4.6〜5.4〜5.8 ２ω＝61.6゜〜17.0゜ r1＝109.6974 d1＝1.950 n1＝1.80518 ν１＝25.43 r2＝50.3888 d2＝5.893 n2＝1.60311 ν２＝60.70 r3＝−235.0061 d3＝0.150 r4＝33.2843 d4＝4.442 n3＝1.49700 ν３＝81.61 r5＝84.5813 d5＝D1（可変） r6＝104.5127 d6＝1.300 n4＝1.77250 ν４＝49.66 r7＝15.4772 d7＝2.837 r8＝66.9404 d8＝1.100 n5＝1.77250 ν５＝49.66 r9＝16.6228 d9＝3.425 n6＝1.84666 ν６＝23.78 r10＝117.6036 d10＝1.470 r11＝−29.1916 d11＝1.100 n7＝1.77250 ν７＝49.66 r12＝70.9775 d12＝0.150 r13＝26.6957 d13＝1.626 n8＝1.59270 ν８＝35.29 r14＝50.0406 d14＝D2（可変） r15＝∞（絞り） d15＝1.100 r16＝59.7844 d16＝2.364 n9＝1.71300 ν９＝53.84 r17＝−56.6341 d17＝0.150 r18＝31.1937 d18＝2.647 n10＝1.50378 ν10＝66.81 r19＝−122.7365 d19＝1.098 r20＝−35.0410 d20＝1.200 n11＝1.78470 ν11＝26.22 r21＝−5773.7788 d21＝D3（可変） r22＝502.4165 d22＝1.816 n12＝1.74950 ν12＝35.27 r23＝−56.3209 d23＝0.176 r24＝47.0717 d24＝1.593 n13＝1.78470 ν13＝26.22 r25＝24.0989 d25＝1.419 r26＝157.9111 d26＝2.377 n14＝1.48749 ν14＝70.20 r27＝−42.7307 d27＝0.150 r28＝23.0522 d28＝2.556 n15＝1.51823 ν1558.96 r29＝24.6569 d29＝D4（可変） r30＝303.8923 d30＝3.622 n16＝1.670717 ν16＝40.26 r31＝−34.9082 d31＝1.788 r32＝−28.8203 d32＝1.499 n17＝1.78590 ν17＝44.18 r33＝−158.2584 ｆ 36.2 72.2 144.7 D1 0.6998 12.7961 24.9523 D2 16.5460 8.6276 1.3993 D3 9.6068 4.0011 0.6199 D4 2.8950 18.9414 27.6956 f1/fW＝1.828,H2/f2＝0.330 fR/fW＝0.781,|f2|/fW＝0.416 （β2T/β2W）/z＝0.416 実施例８ ｆ＝36.2〜74.0〜154.4,F/4.6〜5.4〜5.8 ２ω＝61.6゜〜16.0゜ r1＝100.0152 d1＝1.800 n1＝1.80518 ν１＝25.43 r2＝51.7692 d2＝5.211 n2＝1.60311 ν２＝60.70 r3＝−276.6183 d3＝0.150 r4＝33.9119 d4＝4.190 n3＝1.49700 ν３＝81.61 r5＝83.5267 d5＝D1（可変） r5＝69.4302 d6＝1.300 n4＝1.77250 ν４＝49.66 r7＝16.6021 d7＝4.956 r8＝−117.2702 d8＝1.100 n5＝1.77250 ν５＝49.66 r9＝24.1312 d9＝2.474 n6＝1.84666 ν６＝23.78 r10＝−114.8675 d10＝0.887 r11＝−26.6358 d11＝1.100 n7＝1.77250 ν７＝49.66 r12＝179.1685 d12＝0.149 r13＝35.9203 d13＝1.475 n8＝1.59270 ν８＝35.29 r14＝64.3831 d14＝D2（可変） r15＝∞（絞り） d15＝1.100 r16＝67.0448 d16＝1.880 n9＝1.71300 ν９＝53.84 r17＝−69.1076 d17＝0.150 r18＝32.4539 d18＝2.271 n10＝1.50378 ν19＝66.81 r19＝−88.6075 d19＝0.937 r20＝−39.1516 d20＝1.200 n11＝1.78470 ν11＝26.22 r21＝−1301.6549 d21＝D3（可変） r22＝123.2070 d22＝1.793 n12＝1.74950 ν12＝35.27 r23＝−61.1409 d23＝0.902 r24＝38.4728 d24＝1.738 n13＝1.78470 ν13＝26.22 r25＝18.6489 d25＝1.107 r26＝42.0864 d26＝3.536 n14＝1.48749 ν14＝70.20 r27＝756.3490 d27＝0.150 r28＝16.7404 d28＝2.033 n15＝1.51823 ν15＝58.96 r29＝18.0272 d29＝D4（可変） r30＝−302.4014 d30＝4.532 n16＝1.60717 ν16＝40.26 r31＝−21.2809 d31＝0.651 r32＝−20.5608 d32＝1.200 n17＝1.78590 ν17＝44.18 r33＝−69.2125 ｆ 36.2 74 154.4 D1 0.7814 13.1808 25.1270 D2 19.2528 10.2215 1.3000 D3 10.9192 4.6071 0.6198 D4 3.8210 21.7649 32.7272 f1/fW＝1.820,H2/f2＝0.370 fR/fW＝0.840,|f2|/fW＝0.437 （β2T/β2W）/z＝0.397 実施例９ ｆ＝36.2〜80〜193,F/4.6〜5.2〜5.8 ２ω＝61.6゜〜12.8゜ r1＝70.1404 d1＝2.106 n1＝1.80518 ν１＝25.43 r2＝47.6434 d2＝8.369 n2＝1.49700 ν２＝81.61 r3＝−201.5745 d3＝0.342 r4＝38.2069 d4＝3.451 n3＝1.61700 ν３＝62.79 r5＝53.1035 d5＝D1（可変） r6＝61.6175 d6＝1.320 n4＝1.72916 ν４＝54.68 r7＝17.5922 d7＝5.079 r8＝−69.6592 d8＝1.068 n5＝1.77250 ν５＝49.66 r9＝146.7962 d9＝2.997 n6＝1.80518 ν６＝25.43 r10＝−58.2687 d10＝1.563 r11＝−24.0754 d11＝1.100 n7＝1.72916 ν７＝54.68 r12＝78.5334 d12＝0.100 r13＝46.0581 d13＝1.834 n8＝1.84666 ν８＝23.78 r14＝372.5056 d14＝D2（可変） r15＝∞（絞り） d15＝1.038 r16＝62.7639 d16＝2.540 n9＝1.71300 ν９＝53.84 r17＝−86.6475 d17＝0.141 r18＝31.0015 d18＝4.015 n10＝1.50378 ν10＝66.81 r19＝−53.8968 d19＝0.490 r20＝−39.2795 d20＝1.146 n11＝1.80518 ν11＝25.43 r21＝185.9383 d21＝D3（可変） r22＝55.3269 d22＝2.524 n12＝1.74000 ν12＝28.29 r23＝−113.0453 d23＝0.541 r24＝30.2309 d24＝1.887 n13＝1.80518 ν13＝25.43 r25＝16.7260 d25＝2.728 r26＝∞ d26＝1.526 n14＝1.48749 ν14＝70.20 r27＝−96.2605 d27＝0.141 r28＝16.6059 d28＝1.774 n15＝1.53996 ν15＝59.57 r29＝17.8826 d29＝D4（可変） r30＝78.0230 d30＝5.638 n16＝1.62045 ν16＝38.12 r31＝−32.5529 d31＝1.067 r32＝−30.3374 d32＝1.340 n17＝1.80610 ν17＝40.95 r33＝282.9185 ｆ 36.2 80 193 D1 1.3171 16.2093 31.1362 D2 26.0122 13.2359 1.2297 D3 8.8772 3.5470 0.6000 D4 2.4367 24.8505 47.2437 f1/fW＝2.234,H2/f2＝0.371 fR/fW＝0.871,|f2|/fW＝0.510 （β2T/β2W）/z＝0.400 ただしr1,r2,…はレンズ各面の曲率半径、d1,d2,…は
各レンズの肉厚およびレンズ間隔、n1,n2,…は各レンズ
の屈折率、ν1,ν2,…は各レンズのアッベ数である。Example 1 f = 33.2 to 61.5 to 101.4, F / 4.6 to 5.2 to 5.8 2ω = 61.6 to 24.0 r 1 = -943.6189 d 1 = 2.135 n 1 = 1.84666 ν 1 = 23.88 r 2 = 86.0921 d 2 = 7.339 n 2 = 1.67000 v 2 = 57.33 r 3 = −98.2377 d 3 = 0.067 r 4 = 31.5072 d 4 = 3.881 n 3 = 1.69680 v 3 = 56.49 r 5 = 80.1834 d 5 = D 1 (variable) r 6 = 97.9642 d 6 = 1.383 n 4 = 1.79216 ν 4 = 54.68 r 7 = 16.1944 d 7 = 4.036 r 8 = −31.4026 d 8 = 1.118 n 5 = 1.77250 ν 5 = 49.66 r 9 = −49.1431 d 9 = 1.889 n 6 = 1.80518 ν 6 = 25.43 r 10 = -23.7168 d 10 = 1.199 r 11 = -19.3917 d 11 = 1.018 n 7 = 1.72916 ν 7 = 54.68 r 12 = 249.0968 d 12 = 0.102 r 13 = 44.0305 d 13 = 1.579 n 8 = 1.84666 ν 8 = 23.78 r 14 = 250.8828 d 14 = D 2 ( variable) r 15 = ∞ (stop) d 15 = 1.000 r 16 = 25.6942 d 16 = 2.997 n 9 = 1.67000 ν 9 = 57.33 r 17 = -79.0127 d 17 = 0.138 r 18 = 40.6807 d 18 = 6.005 n 10 = 1.51633 ν 10 = 64.15 r 19 = -16.8133 d 19 = 2.47 2 n 11 = 1.80727 v 11 = 31.68 r 20 = 77.4650 d 20 = D 3 (variable) r 21 = 54.4349 d 21 = 3.268 n 12 = 1.72000 v 12 = 41.98 r 22 = -23.7173 d 22 = 3.666 r 23 =- 25.6776 (aspherical surface) d 23 = 0.600 n 13 = 1.52492 ν 13 = 57.50 r 24 = −19.6491 d 24 = 1.817 n 14 = 1.80610 ν 14 = 40.95 r 25 = 403.8889 Aspherical coefficient E = −0.50719 × 10 -4 , F = −0.99839 × 10 −7 G = −0.14629 × 10 −9 , H = −0.14944 × 10 −11 f 33.2 61.5 101.4 D 1 1.0477 8.0656 13.8752 D 2 18.3191 9.2691 1.2002 D 3 6.9260 5.5479 5.0589 f 1 / f W ＝ 1.525, H 2 / f 2 = 0.377 f R / f W = 0.761, | f 2 | / f W = 0.504 (β 2T / β 2W ) /z=0.606 Example 2 f = 33.2 to 61.5 to 101.4, F / 4.6 to 5.2 to 5.8 2ω = 61.6 to 24.0 r 1 = 465.9825 d 1 = 2.135 n 1 = 1.84666 ν 1 = 23.88 r 2 = 70.2591 d 2 = 7.339 n 2 = 1.67000 ν 2 = 57.33 r 3 = -193.3109 d 3 = 0.067 r 4 = 36.3243 d 4 = 4.123 n 3 = 1.69680 ν 3 = 56.49 r 5 = 143.6573 d 5 = D 1 (variable) r 6 = 152.7897 d 6 = 1.38 3 n 4 = 1.72916 ν 4 = 54.68 r 7 = 17.0438 d 7 = 3.936 r 8 = −35.3533 d 8 = 1.118 n 5 = 1.77250 ν 5 = 49.66 r 9 = −47.0 208 d 9 = 1.835 n 6 = 1.80518 ν 6 = 25.43 r 10 = -24.1761 d 10 = 1.427 r 11 = -20.2612 d 11 = 1.017 n 7 = 1.72916 ν 7 = 54.68 r 12 = 133.0120 d 12 = 0.102 r 13 = 41.0614 d 13 = 1.570 n 8 = 1.84666 ν 8 = 23.78 r 14 = 192.3030 d 14 = D 2 (variable) r 15 = ∞ (aperture) d 15 = 1.000 r 16 = 23.7162 d 16 = 2.821 n 9 = 1.67000 ν 9 = 57.33 r 17 = -126.1440 d 17 = 0.138 r 18 = 35.7456 d 18 = 6.005 n 10 = 1.51633 ν 10 = 64.15 r 19 = -17.3058 d 19 = 2.472 n 11 = 1.807727 ν 11 = 31.68 r 20 = 58.2517 d 20 = D 3 (variable) r 21 = 45.8928 d 21 = 3.366 n 12 = 1.72000 ν 12 = 41.98 r 22 = -23.4434 d 22 = 3.666 r 23 = -22.0958 ( aspherical) d 23 = 0.600 n 13 = 1.52492 ν 13 = 57.50 r 24 = -17.6069 d 24 = 1.817 n 14 = 1.80610 ν 14 = 40.95 r 25 = −406.1037 Aspheric coefficient E = −0.5 1933 × 10 −4 , F = −0.65820 × 10 −7 G = −0.86158 × 10 −9 , H = 0.34818 × 10 −11 f 33.2 61.5 101.4 D 1 0.8910 7.9737 14.8910 D 2 18.1983 9.1862 1.2247 D 3 6.9695 5.6447 5.1758 f 1 / f W = 1.588, H 2 / f 2 = 0.370 f R / f W = 0.762, | f 2 | / f W = 0.511 (β 2T / β 2W) /z=0.621 example 3 f = from 36.2 to 60 10101.3, F / 4.6 to 4.9 to 5.8 2ω = 61.6 ゜ to 24.0 ゜ r 1 = −1511.3485 d 1 = 2.135 n 1 = 1.84666 ν 1 = 23.88 r 2 = 81.5876 d 2 = 7.339 n 2 = 1.67000 ν 2 = 57.33 r 3 = -123.5791 d 3 = 0.067 r 4 = 33.6654 d 4 = 3.285 n 3 = 1.69680 ν 3 = 56.49 r 5 = 100.3884 d 5 = D 1 ( variable) r 6 = 290.2541 d 6 = 1.383 n 4 = 1.72916 ν 4 = 54.68 r 7 = 16.7106 d 7 = 4.443 r 8 = -94.2977 d 8 = 1.118 n 5 = 1.77250 ν 5 = 49.66 r 9 = 76.9948 d 9 = 3.467 n 6 = 1.80518 ν 6 = 25.43 r 10 = -57.2870 d 10 = 1.637 r 11 = -32.1564 d 11 = 1.017 n 7 = 1.72916 ν 7 = 54.68 r 12 = 144.2841 d 12 = 0.102 r 13 = 33.1477 d 13 = 1.921 n 8 = 1.84666 ν 8 = 23.78 r 14 = 60.1784 d 14 = D 2 ( variable) r 15 = ∞ (stop) d 15 = 1.000 r 16 = 22.2456 d 16 = 3.175 n 9 = 1.67000 ν 9 = 57.33 r 17 = -140.9720 d 17 = 0.138 r 18 = 32.9028 d 18 = 6.005 n 10 = 1.51633 v 10 = 64.15 r 19 = -16.9694 d 19 = 2.472 n 11 = 1.80726 v 11 r 20 = 58.2390 d 20 = D 3 (variable) r 21 = 46.7075 d 21 = 3.033 n 12 = 1.72000 v 12 = 41.98 r 22 = -22.7570 d 22 = 3.666 r 23 = -18.9133 (aspherical surface) d 23 = 0.100 n 13 = 1.52492 v 13 = 57.50 r 24 = -16.9656 d 24 = 1.817 n 14 = 1.80610 ν 14 = 40.95 r 25 = −416.4876 Aspherical surface coefficient E = −0.54431 × 10 −4 , F = −0.22145 × 10 −6 G = 0.25549 × 10 −8 , H = −0.21677 × 10 −10 f 36.2 60 101.3 D 1 0.5000 8.3563 16.2610 D 2 16.2610 8.4047 0.5000 D 3 6.6915 5.2254 4.8963 f 1 / f W = 1.623, H 2 / f 2 = 0.420 f R / f W = 0.734, | f 2 | / f W = 0.510 ( β 2T / β 2W ) /z=0.556 Example 4 f = 36.2 to 60.5 to 101.3, F / 4.6 to 5.2 to 5.8 2ω = 61.6 ゜ to 24.0 ゜ r 1 = 453.5114 d 1 = 1.800 n 1 = 1.84666 ν 1 = 23.88 r 2 ＝ 70.8411 d 2 ＝ 4.747 n 2 ＝ 1.67000 ν 2 = 57.33 r 3 ＝ −164.5923 d 3 ＝ 0.100 r 4 ＝ 39.8491 d 4 ＝ 3.710 n 3 ＝ 1.69680 ν 3 = 56.49 r 5 = 120.4881 d 5 = D 1 (variable) r 6 = 154.5767 d 6 = 1.200 n 4 = 1.72916 ν 4 = 54.68 r 7 = 16.6677 d 7 = 2.612 r 8 = -44.8814 d 8 = 1.300 n 5 = 1.77250 ν 5 = 49.66 r 9 = -56.3476 d 9 = 2.158 n 6 = 1.80518 ν 6 = 25.43 r 10 = -22.3774 d 10 = 0.834 r 11 = -19.4212 d 11 = 1.200 n 7 = 1.7916 ν 7 = 54.68 r 12 = 83.6992 d 12 = 0.100 r 13 = 30.5113 d 13 = 1.824 n 8 = 1.84666 ν 8 = 23.78 r 14 = 70.8210 d 14 = D 2 ( variable) r 15 = ∞ (stop) d 15 = 1.000 r 16 = 31.0203 d 16 = 2.291 n 9 = 1.71300 ν 9 = 53.84 r 17 = -3553.0120 d 17 = 0.512 r 18 = 21.4102 d 18 = 5.023 n 10 = 1.50378 ν 10 = 66.81 r 19 = -56.4527 d 19 = 1.288 r 20 = −31.2296 d 20 = 1.200 n 11 = 1.80518 ν 11 ＝ 25.43 r 21 ＝ 33.7970 d 21 ＝ D 3 (variable) r 22 = 33.3989 d 22 = 4.292 n 12 = 1.72000 ν 12 = 41.98 r 23 = -27.3155 d 23 = 4.070 r 24 = -34.9021 ( aspherical) d 24 = 0.500 n 13 = 1.52492 ν 13 = 57.50 r 25 = -21.5997 d 25 = 2.022 n 14 = 1.80610 ν 14 = 40.95 r 26 = -506.5091 Aspheric coefficient E = -0.50588 × 10 -4 , F = -0.81950 × 10 -7 G = 0.49907 × 10 -9 , H = 0.24 360 × 10 -11 f 36.2 60.5 101.3 D 1 0.6202 9.9600 18.6002 D 2 16.6632 8.9430 1.5359 D 3 8.4619 6.8423 5.6092 f 1 / f W = 1.791, H 2 / f 2 = 0.308 f R / f W = 0.817, | f 2 | / f W = 0.529 (β 2T / β 2W ) /z=0.555 Example 5 f = 39.3 to 67.5 to 116, F / 4.6 to 5.2 to 5.8 2ω = 58.6 ゜ to 21.0 ゜ r 1 = 159.2336 d 1 = 1.800 n 1 = 1.84666 v 1 = 23.88 r 2 = 48.6828 d 2 = 3.959 n 2 = 1.67000 v 2 = 57.33 r 3 = -1300.5754 d 3 = 0.100 r 4 = 40.7642 d 4 = 3.550 n 3 = 1.69680 v 3 = 56.49 r 5 = 239.2228 d 5 = D 1 (variable) r 6 = 4563.5008 d 6 = 1.374 n 4 = 1.77250 ν 4 = 49.66 r 7 = 21.9110 d 7 = 2.9 37 r 8 = -110.9826 d 8 = 1.162 n 5 = 1.77250 ν 5 = 49.66 r 9 = 25.9842 d 9 = 3.264 n 6 = 1.84666 ν 6 = 23.78 r 10 = -74.7565 d 10 = 0.801 r 11 = -32.7831 d 11 = 1.162 n 7 = 1.77250 ν 7 = 49.66 r 12 = 74.4241 d 12 = 0.158 r 13 = 36.4070 d 13 = 2.139 n 8 = 1.59270 ν 8 = 35.29 r 14 = 76.3043 d 14 = D 2 ( variable) r 15 = ∞ (Aperture) d 15 = 1.000 r 16 = 27.8678 d 16 = 2.679 n 9 = 1.71300 ν 9 = 53.84 r 17 = -39.9215 d 17 = 0.100 r 18 = 34.6887 d 18 = 2.577 n 10 = 1.50378 ν 10 = 66.81 r 19 = -248.8153 d 19 = 0.800 r 20 = -30.7503 d 20 = 1.200 n 11 = 1.80518 ν 11 = 25.43 r 21 = 61.2149 d 21 = D 3 ( variable) r 22 = 42.9845 d 22 = 15.816 n 12 = 1.72000 ν 12 = 41.98 r 23 = -23.9117 d 23 = 2.000 r 24 = -28.1493 ( aspherical) d 24 = 0.500 n 13 = 1.52492 ν 13 = 57.50 r 25 = -18.3688 d 25 = 1.841 n 14 = 1.80610 ν 14 = 40.95 r 26 = 198.6050 Aspherical surface coefficient E = −0.42783 × 10 -4 , F = −0.22003 × 10 -6 G = 0.24449 x 10 -8 , H = -0.17024 x 10 -10 F 39.3 67.5 116 D 1 = 0.8000 9.7600 17.8866 D 2 15.0152 7.9270 1.000 D 3 7.7737 3.8749 1.0040 f 1 / f W = 1.553, H 2 / f 2 = 0.331 f R / f W = 0.665, | f 2 | / f W = 0.443 (β 2T / β 2W) /z=0.538 example 6 f = 36.3~68.8~131.5, F / 4.6~5.4~5.8 2ω = 61.6 ゜ to 18.6 ゜ r 1 = 103.6136 d 1 = 1.950 n 1 = 1.80518 ν 1 = 25.43 r 2 = 51.9451 d 2 = 5.735 n 2 = 1.60311 ν 2 = 60.70 r 3 = −300.8593 d 3 = 0.150 r 4 = 32.9012 d 4 = 4.184 n 3 = 1.49700 ν 3 = 81.61 r 5 = 72.2838 d 5 = D 1 ( variable) r 6 = 72.0113 d 6 = 1.300 n 4 = 1.77250 ν 4 = 49.66 r 7 = 15.8102 d 7 = 4.289 r 8 = 278.4020 d 8 = 1.326 n 5 = 1.77250 ν 5 = 49.66 r 9 = 21.5753 d 9 = 3.174 n 6 = 1.84666 ν 6 = 23.78 r 10 = -430.6642 d 10 = 1.198 r 11 = -27.5977 d 11 = 1.100 n 7 = 1.77250 ν 7 = 49.66 r 12 = 57.0953 d 12 = 0.150 r 13 = 29.3506 d 13 = 1.831 n 8 = 1.59270 ν 8 = 35.29 r 14 = 91.4194 d 14 = D 2 (variable) r 15 = ∞ (aperture) d 15 = 1.100 r 16 = 56.5933 d 16 = 2.516 n 9 = 1.71300 ν 9 = 53.84 r 17 = -44.6275 d 17 = 0.150 r 18 = 30.4398 d 18 = 2.738 n 10 = 1.50378 v 10 = 66.81 r 19 = -474.5345 d 19 = 0.981 r 20 = -35.0 512 d 20 = 1.200 n 11 = 1.78470 v 11 = 26.22 r 21 = 369.0560 d 21 = D 3 (variable) r 22 = 297.5792 d 22 = 2.193 n 12 = 1.74950 v 12 = 35.27 r 23 = -58.9335 d 23 = 0.150 r 24 = 50.1546 d 24 = 1.766 n 13 = 1.78470 v 13 = 26.22 r 25 = 24.0254 d 25 = 1.814 r 26 = 529.2978 d 26 = 2.378 n 14 = 1.48749 ν 14 = 70.20 r 27 = -36.6566 d 27 = 0.150 r 28 = 20.8026 d 28 = 2.793 n 15 = 1.51823 ν 15 = 58.96 r 29 = 22.5439 d 29 = D 4 (variable) r 30 = 339.9183 d 30 = 3.882 n 16 = 1.60717 ν 16 = 40.26 r 31 = -32.0997 d 31 = 1.879 r 32 = -27.2472 d 32 = 1.500 n 17 = 1.78590 ν 17 = 44.18 r 33 = -146.5891 f 36.3 68.8 131.5 D 1 0.7000 12.7269 25.1507 D 2 15.7908 8.1844 1.4000 D 3 8.7760 3 .5689 0.6200 D 4 3.6244 18.3667 26.6261 f 1 / f W = 1.925, H 2 / f 2 = 0.380 f R / f W = 0.778, | f 2 | / f W = 0.434 (β 2T / β 2W) / z = 0.449 Example 7 f = 36.2 to 72.2 to 144.7, F / 4.6 to 5.4 to 5.8 2ω = 61.6 to 17.0 ゜ r 1 = 109.6974 d 1 = 1.950 n 1 = 1.80518 ν 1 = 25.43 r 2 = 50.3888 d 2 = 5.893 n 2 = 1.60311 ν 2 = 60.70 r 3 = −235.0061 d 3 = 0.150 r 4 = 33.2843 d 4 = 4.442 n 3 = 1.49700 ν 3 = 81.61 r 5 = 84.5813 d 5 = D 1 (variable) r 6 = 104.5127 d 6 = 1.300 n 4 = 1.77250 ν 4 = 49.66 r 7 = 15.4772 d 7 = 2.837 r 8 = 66.9404 d 8 = 1.100 n 5 = 1.77250 ν 5 = 49.66 r 9 = 16.6228 d 9 = 3.425 n 6 = 1.84666 ν 6 = 23.78 r 10 = 117.6036 d 10 = 1.470 r 11 = -29.1916 d 11 = 1.100 n 7 = 1.77250 ν 7 = 49.66 r 12 = 70.9775 d 12 = 0.150 r 13 = 26.6957 d 13 = 1.626 n 8 = 1.59270 ν 8 = 35.29 r 14 = 50.0406 d 14 = D 2 ( variable) r 15 = ∞ (stop) d 15 = 1.100 r 16 = 59.7844 d 16 = 2.364 n 9 = 1.71300 ν 9 53.84 r 17 = -56.6341 d 17 = 0.150 r 18 = 31.1937 d 18 = 2.647 n 10 = 1.50378 ν 10 = 66.81 r 19 = -122.7365 d 19 = 1.098 r 20 = -35.0410 d 20 = 1.200 n 11 = 1.78470 ν 11 = 26.22 r 21 = -5773.7788 d 21 = D 3 (variable) r 22 = 502.4165 d 22 = 1.816 n 12 = 1.74950 ν 12 = 35.27 r 23 = -56.3209 d 23 = 0.176 r 24 = 47.0717 d 24 = 1.593 n 13 = 1.78470 ν 13 = 26.22 r 25 = 24.0989 d 25 = 1.419 r 26 = 157.9111 d 26 = 2.377 n 14 = 1.48749 ν 14 = 70.20 r 27 = -42.7307 d 27 = 0.150 r 28 = 23.0522 d 28 = 2.556 n 15 = 1.51823 ν 15 58.96 r 29 = 24.6569 d 29 = D 4 ( variable) r 30 = 303.8923 d 30 = 3.622 n 16 = 1.670717 ν 16 = 40.26 r 31 = -34.9082 d 31 = 1.788 r 32 = -28.8203 d 32 = 1.499 n 17 = 1.78590 ν 17 = 44.18 r 33 = −158.2584 f 36.2 72.2 144.7 D 1 0.6998 12.7961 24.9523 D 2 16.5460 8.6276 1.3993 D 3 9.6068 4.0011 0.6199 D 4 2.8950 18.9414 27.6956 f 1 / f W = 1.828, H 2 / f 2 = 0.330 f R / f W = 0.787, | f 2 | / f W = 0 .416 (β 2T / β 2W ) /z=0.416 Example 8 f = 36.2-74.0-154.4, F / 4.6-5.4-5.8 2ω = 61.6 ゜ -16.0 ゜ r 1 = 100.0152 d 1 = 1.800 n 1 = 1.80518 ν 1 = 25.43 r 2 = 51.7692 d 2 = 5.211 n 2 = 1.60311 ν 2 = 60.70 r 3 = −276.6183 d 3 = 0.150 r 4 = 33.9119 d 4 = 4.190 n 3 = 1.49700 ν 3 = 81.61 r 5 = 83.5267 d 5 = D 1 (variable) r 5 = 69.4302 d 6 = 1.300 n 4 = 1.77250 ν 4 = 49.66 r 7 = 16.6021 d 7 = 4.956 r 8 = -117.2702 d 8 = 1.100 n 5 = 1.77250 ν 5 = 49.66 r 9 = 24.1312 d 9 = 2.474 n 6 = 1.84666 ν 6 = 23.78 r 10 = -114.8675 d 10 = 0.887 r 11 = -26.6358 d 11 = 1.100 n 7 = 1.77250 ν 7 = 49.66 r 12 = 179.1685 d 12 = 0.149 r 13 = 35.9203 d 13 = 1.475 n 8 = 1.59270 ν 8 = 35.29 r 14 = 64.3831 d 14 = D 2 ( variable) r 15 = ∞ (stop) d 15 = 1.100 r 16 = 67.0448 d 16 = 1.880 n 9 = 1.71300 ν 9 = 53.84 r 17 = -69.1076 d 17 = 0.150 r 18 = 32.4539 d 18 = 2.271 n 10 = 1.50378 ν 19 = 66.81 r 19 = -88.6075 d 19 = 0.937 r 20 = -39.1516 d 20 = 1.200 n 11 = 1.78470 ν 11 = 26.22 r 21 = -1301.6549 d 21 = D 3 ( variable) r 22 = 123.2070 d 22 = 1.793 n 12 = 1.74950 v 12 = 35.27 r 23 = -61.1409 d 23 = 0.902 r 24 = 38.4728 d 24 = 1.738 n 13 = 1.78470 v 13 = 26.22 r 25 = 18.6489 d 25 = 1.107 r 26 = 42.0864 d 26 = 3.536 n 14 = 1.48749 ν 14 = 70.20 r 27 = 756.3490 d 27 = 0.150 r 28 = 16.7404 d 28 = 2.033 n 15 = 1.51823 ν 15 = 58.96 r 29 = 18.0272 d 29 = D 4 (variable) r 30 = −302.4014 d 30 = 4.532 n 16 = 1.60717 ν 16 = 40.26 r 31 = -21.2809 d 31 = 0.651 r 32 = -20.5608 d 32 = 1.200 n 17 = 1.78590 ν 17 = 44.18 r 33 = -69.2125 f 36.2 74 154.4 D 1 0.7814 13.1808 25.1270 D 2 19.2528 10.2215 1.3000 D 3 10.9192 4.6071 0.6198 D 4 3.8210 21.7649 32.7272 f 1 / f W = 1.820, H 2 / f 2 = 0.370 f R / f W = 0.840, | f 2 | / f W = 0.437 (β 2T / β 2W ) /Z=0.399 Example 9 f = 36.2-80-193, F / 4.6-5.2-5.8 2ω = 61.6 ～12.8 ° r 1 = 70.1404 d 1 = 2.106 n 1 = 1.80518 ν 1 = 25.43 r 2 = 47.6434 d 2 = 8.369 n 2 = 1.49700 ν 2 = 81.61 r 3 = -201.5745 d 3 = 0.342 r 4 = 38.2069 d 4 = 3.451 n 3 = 1.61700 ν 3 = 62.79 r 5 = 53.1035 d 5 = D 1 (variable) r 6 = 61.6175 d 6 = 1.320 n 4 = 1.72916 ν 4 = 54.68 r 7 = 17.5922 d 7 = 5.079 r 8 = − 69.6592 d 8 = 1.068 n 5 = 1.77250 ν 5 = 49.66 r 9 = 146.7962 d 9 = 2.997 n 6 = 1.80518 ν 6 = 25.43 r 10 = -58.2687 d 10 = 1.563 r 11 = -24.0754 d 11 = 1.100 n 7 = 1.72916 ν 7 = 54.68 r 12 = 78.5334 d 12 = 0.100 r 13 = 46.0581 d 13 = 1.834 n 8 = 1.84666 ν 8 = 23.78 r 14 = 372.5056 d 14 = D 2 (variable) r 15 = ∞ (aperture) d 15 = 1.038 r 16 = 62.7639 d 16 = 2.540 n 9 = 1.71300 ν 9 = 53.84 r 17 = -86.6475 d 17 = 0.141 r 18 = 31.0015 d 18 = 4.015 n 10 = 1.50378 ν 10 = 66.81 r 19 = -53.8968 d 19 = 0.490 r 20 = -39.2795 d 20 = 1.146 n 11 = 1.80518 ν 11 = 25.43 r 21 = 185 .9383 d 21 = D 3 (variable) r 22 = 55.3269 d 22 = 2.524 n 12 = 1.74000 ν 12 = 28.29 r 23 = -113.0453 d 23 = 0.541 r 24 = 30.2309 d 24 = 1.887 n 13 = 1.80518 ν 13 = 25.43 r 25 = 16.7260 d 25 = 2.728 r 26 = ∞ d 26 = 1.526 n 14 = 1.48749 ν 14 = 70.20 r 27 = -96.2605 d 27 = 0.141 r 28 = 16.6059 d 28 = 1.774 n 15 = 1.53996 ν 15 = 59.57 r 29 = 17.8826 d 29 = D 4 (variable) r 30 = 78.0230 d 30 = 5.638 n 16 = 1.62045 ν 16 = 38.12 r 31 = −32.5529 d 31 = 1.067 r 32 = −30.3374 d 32 = 1.340n 17 = 1.80610 ν 17 = 40.95 r 33 = 282.9185 f 36.2 80 193 D 1 1.3171 16.2093 31.1362 D 2 26.0122 13.2359 1.2297 D 3 8.8772 3.5470 0.6000 D 4 2.4367 24.8505 47.2437 f 1 / f W = 2.234, H 2 / f 2 = 0.371 f R / f W = 0.871, | f 2 | / f W = 0.510 (β 2T / β 2W) /z=0.400 where r 1, r 2, ... is the radius of curvature of each lens surface, d 1, d 2, ... each the thickness of the lens and the lens interval, n 1, n 2, ... is the refractive index of each lens, ν 1, ν 2, ... each Les The Abbe number of the figure.
本発明の実施例中に用いられている非球面の形状は、
光軸方向をｘ、光軸と直角方向をｙとした時、次の式に
て表わされる。The shape of the aspherical surface used in the embodiment of the present invention is as follows.
When the direction of the optical axis is x and the direction perpendicular to the optical axis is y, it is expressed by the following equation.
ただしｒは基準球面の曲率半径、E,F,G,H,…は非球面
係数である。 Here, r is the radius of curvature of the reference spherical surface, and E, F, G, H,... Are aspherical surface coefficients.
［発明の効果］ 本発明は、全長が短く第１群におけるレンズの外径が
小さくしかも収差の良好に補正されている広角から望遠
までを含む広い変倍域を有するズームレンズを達成し得
たものである。[Effects of the Invention] The present invention has achieved a zoom lens having a wide zoom range from wide angle to telephoto in which the overall length is short, the outer diameter of the lens in the first group is small, and the aberration is well corrected. Things.
第１図乃至第９図は、夫々本発明の実施例１乃至実施例
９の断面図、第10図，第11図，第12図は夫々実施例１の
広角端，中間焦点距離，望遠端の収差曲線図、第13図，
第14図，第15図は夫々実施例２の広角端，中間焦点距
離，望遠端の収差曲線図、第16図，第17図，第18図は夫
々実施例３の広角端，中間焦点距離，望遠端の収差曲線
図、第19図，第20図，第21図は夫々実施例４の広角端，
中間焦点距離，望遠端の収差曲線図、第22図，第23図，
第24図は夫々実施例５の広角端，中間焦点距離，望遠端
の収差曲線図、第25図，第26図，第27図は夫々実施例６
の広角端，中間焦点距離，望遠端の収差曲線図、第28
図，第29図，第30図は夫々実施例７の広角端，中間焦点
距離，望遠端の収差曲線図、第31図，第32図，第33図は
夫々実施例８の広角端，中間焦点距離，望遠端の収差曲
線図、第34図，第35図，第36図は夫々実施例９の広角
端，中間焦点距離，望遠端の収差曲線図である。1 to 9 are cross-sectional views of Embodiments 1 to 9 of the present invention, respectively. FIGS. 10, 11, and 12 are wide-angle end, intermediate focal length, and telephoto end of Embodiment 1, respectively. Aberration curve of FIG. 13,
14 and 15 are aberration curve diagrams at the wide angle end, an intermediate focal length, and a telephoto end of the second embodiment, respectively. FIGS. 16, 17, and 18 are respectively the wide angle end and the intermediate focal length of the third embodiment. FIG. 19, FIG. 20, and FIG. 21 are aberration curve diagrams at the telephoto end, respectively.
Intermediate focal length, aberration curve at telephoto end, Fig. 22, Fig. 23,
FIG. 24 is an aberration curve diagram at the wide angle end, an intermediate focal length, and a telephoto end of the fifth embodiment, and FIGS. 25, 26, and 27 are respectively the sixth embodiment.
28th aberration curve at wide angle end, intermediate focal length, telephoto end
FIG. 29, FIG. 29, and FIG. 30 are aberration curve diagrams at the wide angle end, an intermediate focal length, and a telephoto end of the seventh embodiment, respectively, and FIG. 31, FIG. 32, and FIG. 34, 35, and 36 are aberration curve diagrams at the wide angle end, an intermediate focal length, and a telephoto end, respectively, of the ninth embodiment.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 9/00 - 17/08 G02B 21/02 - 21/04 G02B 25/00 - 25/04 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) G02B 9/00-17/08 G02B 21/02-21/04 G02B 25/00-25/04
Claims (1)
と、負の屈折力を有する第２群と、それに続く群が少な
くとも一つの正の屈折力を有する群とよりなり、第２群
より像側に位置する群の物体側に明るさ絞りを有し、前
記第２群が物体側より順に像側に強い曲面を持つ負レン
ズよりなる第１成分と負レンズと正レンズの接合レンズ
よりなる第２成分と物体側に強い曲面を持つ負レンズよ
りなる第３成分と物体側に強い曲面を持つ正のメニスカ
スレンズよりなる第４成分とからなりかつ次の条件
（１）、（２）、（３）を満足する変倍レンズ。 （１） 1.5＜f1/fW＜3.0 （２） 0.1＜H2/f2＜0.425 （３） 0.6＜fR/FW＜0.875 ただしfWは広角端における全系の焦点距離、f1は第１群
の焦点距離、fRは第３群以降の群の広角端における合成
焦点距離、H2は第２群の最終面から測った後側主点まで
の距離である。1. A first group having a positive refractive power, a second group having a negative refractive power, and a subsequent group are at least one group having a positive refractive power. A second lens unit having a brightness stop on the object side located on the image side of the second lens unit, wherein the second lens unit includes a first component including a negative lens having a strong curved surface on the image side in order from the object side; A second component composed of a cemented lens, a third component composed of a negative lens having a strong curved surface on the object side, and a fourth component composed of a positive meniscus lens having a strong curved surface on the object side, and the following condition (1): A variable power lens that satisfies (2) and (3). (1) 1.5 <f 1 / f W <3.0 (2) 0.1 <H 2 / f 2 <0.425 (3) 0.6 <f R / F W <0.875 where f W is the focal length of the entire system at the wide-angle end, f 1 is the focal length of the first group, the f R composite focal length at the wide-angle end of the group after the third group, H 2 is the distance to a rear principal point measured from the last surface of the second group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2211471A JP3063035B2 (en) | 1990-08-13 | 1990-08-13 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2211471A JP3063035B2 (en) | 1990-08-13 | 1990-08-13 | Zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0496012A JPH0496012A (en) | 1992-03-27 |
| JP3063035B2 true JP3063035B2 (en) | 2000-07-12 |
Family
ID=16606495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2211471A Expired - Fee Related JP3063035B2 (en) | 1990-08-13 | 1990-08-13 | Zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3063035B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3331226B2 (en) * | 1992-10-20 | 2002-10-07 | オリンパス光学工業株式会社 | Zoom lens |
| JPH09218352A (en) * | 1996-02-08 | 1997-08-19 | Minolta Co Ltd | Zoom lens |
| JP4994796B2 (en) * | 2006-11-14 | 2012-08-08 | キヤノン株式会社 | Zoom lens and imaging apparatus having the same |
| WO2013099210A1 (en) * | 2011-12-27 | 2013-07-04 | 富士フイルム株式会社 | Zoom lens and imaging device |
| JP6205858B2 (en) * | 2013-05-31 | 2017-10-04 | 株式会社ニコン | Variable magnification optical system, imaging device, and variable magnification optical system manufacturing method |
| JP6205855B2 (en) * | 2013-05-31 | 2017-10-04 | 株式会社ニコン | Variable magnification optical system, imaging device, and variable magnification optical system manufacturing method |
| JP6205856B2 (en) * | 2013-05-31 | 2017-10-04 | 株式会社ニコン | Variable magnification optical system, imaging device, and variable magnification optical system manufacturing method |
| WO2014192750A1 (en) * | 2013-05-31 | 2014-12-04 | 株式会社ニコン | Variable magnification optical system, imaging device, and method for manufacturing variable magnification optical system |
| CN107209351B (en) * | 2014-12-26 | 2020-07-31 | 株式会社尼康 | Variable magnification optical system and optical device |
-
1990
- 1990-08-13 JP JP2211471A patent/JP3063035B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0496012A (en) | 1992-03-27 |
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