JP2587218B2 - Zoom lens - Google Patents
Zoom lensInfo
- Publication number
- JP2587218B2 JP2587218B2 JP61103825A JP10382586A JP2587218B2 JP 2587218 B2 JP2587218 B2 JP 2587218B2 JP 61103825 A JP61103825 A JP 61103825A JP 10382586 A JP10382586 A JP 10382586A JP 2587218 B2 JP2587218 B2 JP 2587218B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- lens
- zoom lens
- refractive power
- negative
- 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.)
- Expired - Fee Related
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、広角側の画角が76゜でズーム比が３倍程度
程度のコンパクトなズーム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 compact zoom lens having an angle of view on the wide angle side of 76 ° and a zoom ratio of about three times.
画角が76゜でズーム比が３倍程度のコンパクトなズー
ムレンズの従来例として特開昭58−95315号に記載され
ているものがある。このズームレンズは負−正−負−正
の４群構成のレンズ系であつて、コンパクトなレンズ系
ではあるが広角での軸外のメリジオナル像画が補正不足
であつて軸外性能が悪い。また軸外像面が平坦でないた
めに製造誤差により軸外像面位置が変動した時性能が異
なるために性能のばらつきが生じ易い等の欠点がある。As a conventional example of a compact zoom lens having an angle of view of 76 ° and a zoom ratio of about 3 times, there is one disclosed in JP-A-58-95315. This zoom lens is a four-group lens system of negative-positive-negative-positive. Although it is a compact lens system, the off-axis meridional image at a wide angle is insufficiently corrected and the off-axis performance is poor. In addition, the off-axis image plane is not flat, and when the off-axis image plane position fluctuates due to a manufacturing error, the performance is different.
本発明が解決しようとする問題点は、広角での軸外の
メリジオナル像面が良好に補正されていて、製造誤差が
あつても性能が安定したコンパクトなズームレンズを提
供することにある。A problem to be solved by the present invention is to provide a compact zoom lens whose off-axis meridional image plane at a wide angle is well corrected and whose performance is stable even if there is a manufacturing error.
本発明のズームレンズは、上記の問題点を解決するた
めに負の第１群と、正の第２群と、負の第３群と、正の
第４群に続いて最も像側に負の第５群を配置したレンズ
系で、更に次の各条件を満足することを特徴とするレン
ズ系である。In order to solve the above-mentioned problems, the zoom lens according to the present invention has a negative first lens unit, a positive second lens unit, a negative third lens unit, and a positive fourth lens unit. Is a lens system in which the fifth unit is arranged, and further satisfies the following conditions.
（１） 3.5＜|fV/fW|＜35 （２） 0.7＜fI/fIII＜1.5 （３） 1.0＜fII/fW＜1.5 ただし、fWは広角端における全系の焦点距離、fIは第
１群の焦点距離、fIIは第２群の焦点距離、fIIIは第３
群の焦点距離、fVは第５群の焦点距離、である。 (1) 3.5 <| f V / f W | <35 (2) 0.7 <f I / f III <1.5 (3) 1.0 <f II / f W <1.5 However, f W is the focal of the entire system at the wide-angle end Distance, f I is the first group focal length, f II is the second group focal length, f III is the third group
The focal length of the group, f V is the focal length of the fifth group.
本発明のズームレンズは、前記のような５群構成のズ
ームレンズであつて、広角端から望遠端へズーミングを
行なう際に第１群と第２群、第３群と第４群の間の空気
間隔が減少し、第２群と第３群の間の空気間隔が増大す
るように移動することによつて広角側では逆望遠型のレ
ンズ構成になり、望遠側では望遠型のレンズ構成になる
ようにしてコンパクトな構成にすると共に最も像側に負
の第５群を配置することによつて広角側で軸外メリジオ
ナル像面を良好に補正し得たものである。The zoom lens of the present invention is a zoom lens having a five-group configuration as described above, and includes a first lens unit and a second lens unit and a third lens unit and a fourth lens unit when zooming from the wide-angle end to the telephoto end. By moving so that the air interval decreases and the air interval between the second and third units increases, the wide-angle side becomes an inverted telephoto lens configuration, and the telephoto side becomes a telephoto lens configuration. Thus, the off-axis meridional image plane can be favorably corrected on the wide-angle side by arranging the compact fifth lens unit and disposing the negative fifth lens unit on the most image side.
更に本発明のズームレンズは前記の各条件を満足する
ようにしたもので、次に各条件について説明する。Further, the zoom lens according to the present invention satisfies the above conditions, and each condition will be described below.
条件（１）は、前記の負の第５群の屈折力を規定した
もので、条件（１）の下限を越えると歪曲収差が補正し
得なくなる。また本発明のレンズ系を、一眼レフカメラ
の交換レンズとして使用する場合には、広角側でのバツ
クフオーカスが短くなりすぎるので好ましくない。条件
（１）の上限を越えると第５群の屈折力が弱くなりすぎ
るので広角側でのメリジオナル像面が補正不足になる。Condition (1) defines the refractive power of the negative fifth lens unit. If the lower limit of condition (1) is exceeded, distortion cannot be corrected. Further, when the lens system of the present invention is used as an interchangeable lens of a single-lens reflex camera, the back focus on the wide-angle side becomes too short, which is not preferable. When the value exceeds the upper limit of the condition (1), the refractive power of the fifth lens unit becomes too weak, so that the meridional image plane on the wide-angle side is insufficiently corrected.
条件（２）は第１群の屈折力と第３群の屈折力をほぼ
均等に配分することによつて収差を良好に補正するため
のものである。条件（２）の下限を越えると負の屈折力
が物体側に片寄り、望遠側でレンズ系が大型になる。ま
た第３群では軸上光線がその最大径付近を通るために、
条件（２）の上限を越えると第３群の屈折力が強くなり
すぎ球面収差を補正し得なくなる。Condition (2) is to satisfactorily correct the aberration by distributing the refractive power of the first group and the refractive power of the third group almost equally. When the value goes below the lower limit of the condition (2), the negative refractive power is shifted toward the object side, and the lens system becomes large on the telephoto side. In the third group, since the on-axis ray passes near its maximum diameter,
When the value exceeds the upper limit of the condition (2), the refractive power of the third lens unit becomes so strong that spherical aberration cannot be corrected.
条件（３）の下限を越えると望遠側での球面収差が補
正過剰となり、上限を越えると第４群の屈折力が強くな
り望遠側でレンズ系が大型になる。If the lower limit of the condition (3) is exceeded, spherical aberration at the telephoto side will be overcorrected. If the upper limit of the condition (3) is exceeded, the refractive power of the fourth unit will be increased, and the lens system will be large on the telephoto side.
以上の外にバツクフオーカスを保ちながら、レンズ系
の全長を短くするためには第５群を負の単レンズにする
のが望ましく、その場合、次の条件（４）を満足するこ
とが像の性能を良好に保つ上で好ましい。In order to shorten the overall length of the lens system while maintaining the back focus in addition to the above, it is desirable that the fifth unit be a negative single lens. In this case, it is necessary to satisfy the following condition (4). Is preferable for maintaining good.
（４） −１＜（rV1＋rV2）／（rV1−rV2）＜３ ただしrV1は第５群の物体側の面の曲率半径、rV2は第
５群の像側の面の曲率半径である。(4) -1 <(r V1 + r V2 ) / (r V1 −r V2 ) <3 where r V1 is the radius of curvature of the object side surface of the fifth group, and r V2 is the image side surface of the fifth group. The radius of curvature.
この条件（４）の上限を越えると広角側での軸外メリ
ジオナル像面が補正不足になり、また条件（４）の下限
を越えると歪曲収差が補正し得なくなる。When the value exceeds the upper limit of the condition (4), the off-axis meridional image surface on the wide-angle side becomes insufficiently corrected. When the value exceeds the lower limit of the condition (4), the distortion cannot be corrected.
更に広角側での軸外メリジオナル像面の補正には、第
５群の少なくとも１面に非球面を用いることが有効であ
つて、これによつて極めて良好な像面の平坦性を得るこ
とが出来る。この場合の非球面としては、非球面形状と
して一般に知られた下記回転対称非球面の式で表わす
時、次の条件（５）を満足することが望ましい。Further, for correction of the off-axis meridional image plane on the wide-angle side, it is effective to use an aspherical surface for at least one surface of the fifth lens unit, whereby an extremely good image plane flatness can be obtained. I can do it. The aspherical surface in this case desirably satisfies the following condition (5) when expressed by the following rotationally symmetric aspherical surface formula generally known as an aspherical surface shape.
（５） −７＜log|E|＜−４ ただしｘは非球面の光軸上の点（面の頂点）を原点と
して光軸に垂直な方向にｓだけ離れた点における光軸方
向の座標、ｒは近軸曲率半径、E,F,G,…は非球面係数で
ある。尚Ｅは非球面が物体側の面の場合は負、像側の面
の場合は正とする。 (5) -7 <log | E | <-4, where x is a coordinate in the optical axis direction at a point separated by s in a direction perpendicular to the optical axis with respect to the point on the optical axis of the aspheric surface (vertex of the surface) as the origin. , R are paraxial curvature radii, and E, F, G,... Are aspherical coefficients. Note that E is negative when the aspheric surface is a surface on the object side, and positive when the aspheric surface is a surface on the image side.
条件（５）の下限を越えるとより高次の非球面を使わ
ないと非球面の作用が弱くなりすぎて効果がなくなり、
また高次の面を使用すると最大画角付近で軸外収差が補
正過剰になる。また条件（５）の上限を越えると非球面
の作用が画角の小さいところから効きすぎて補正過剰に
なる。If the lower limit of the condition (5) is exceeded, the effect of the aspherical surface becomes too weak unless a higher order aspherical surface is used, and the effect is lost.
When a higher-order surface is used, off-axis aberration is overcorrected near the maximum angle of view. When the value exceeds the upper limit of the condition (5), the effect of the aspherical surface becomes too effective from a small angle of view, resulting in excessive correction.
次に近距離物点に対する合焦の際の収差補正を良好に
するためには、以下の条件（６）を満足することが好ま
しい。Next, in order to improve aberration correction at the time of focusing on a short-distance object point, it is preferable to satisfy the following condition (6).
（６） ０＜1/r1＜0.01 ただしr1は第１面の曲率半径である。(6) 0 <1 / r 1 <0.01 where r 1 is the radius of curvature of the first surface.
条件（６）の上限を越えると近距離物点に対して合焦
した際に球面収差の変動が大きく補正し得ない。条件
（６）の下限を越えると歪曲収差が増大し補正し得な
い。If the upper limit of the condition (6) is exceeded, the fluctuation of the spherical aberration cannot be largely corrected when focusing on a short-distance object point. When the value goes below the lower limit of the condition (6), distortion increases, and correction cannot be performed.
本発明のズームレンズの各実施例は、第１図乃至第６
図に示すレンズ構成で、次の通りである。Embodiments of the zoom lens according to the present invention are shown in FIGS.
The lens configuration shown in the figure is as follows.
実施例１ ｆ＝28.83〜82.65 r1 ＝301.1438 d1 ＝1.7000 n1 ＝1.77250 ν1 ＝49.66 r2 ＝34.6023 d2 ＝6.0000 r3 ＝1026.5330 d3 ＝5.0000 n2 ＝1.78314 ν2 ＝30.67 r4 ＝−57.5866 d4 ＝0.1200 r5 ＝−126.2926 d5 ＝1.6000 n3 ＝1.77250 ν3 ＝49.66 r6 ＝36.9559 d6 ＝1.8000 r7 ＝31.8795 d7 ＝2.7000 n4 ＝1.84666 ν4 ＝23.88 r8 ＝48.0676 d8 ＝D1 r9 ＝40.0421 d9 ＝1.1000 n5 ＝1.83400 ν5 ＝37.16 r10＝18.4499 d10＝7.8000 n6 ＝1.69680 ν6 ＝56.49 r11＝−29.0797 d11＝1.1000 n7 ＝1.75520 ν7 ＝27.51 r12＝−118.4784 d12＝0.1200 r13＝33.4886 d13＝2.6000 n8 ＝1.61800 ν8 ＝63.38 r14＝112.1534 d14＝D2 r15＝−85.6126 d15＝2.2000 n9 ＝1.80518 ν9 ＝25.43 r16＝−23.9196 d16＝1.0000 n10＝1.72020 ν10＝47.71 r17＝41.8498 d17＝D3 r18＝97.1229 d18＝5.0000 n11＝1.64000 ν11＝60.09 r19＝−31.0898 d19＝0.1200 r20＝133.1136 d20＝3.2000 n12＝1.67000 ν12＝57.33 r21＝−59.2134 d21＝2.0000 r22＝−28.2799 d22＝1.4000 n13＝1.87675 ν13＝37.39 r23＝−191.3389 d23＝D4 r24＝−366.2584 d24＝1.0000 n14＝1.75520 ν14＝27.51 r25＝594.6673 f 28.83 50.08 82.65 D1 44.568 15.648 1.950 D2 4.200 11.800 22.100 D3 19.400 11.800 1.500 D4 0.800 8.400 18.700 fI＝−42.22、fII＝33.74、fIII＝−42.96 fIV＝49.98 fV＝−300、 実施例２ ｆ＝28.83〜82.6 r1 ＝387.1987 d1 ＝2.3387 n1 ＝1.77250 ν1 ＝49.66 r2 ＝35.5106 d2 ＝6.3000 r3 ＝423.2710 d3 ＝4.5000 n2 ＝1.78472 ν2 ＝25.71 r4 ＝−64.1422 d4 ＝0.2000 r5 ＝−148.5982 d5 ＝1.9344 n3 ＝1.77250 ν3 ＝49.66 r6 ＝43.9444 d6 ＝1.2846 r7 ＝30.0385 d7 ＝3.1865 n4 ＝1.80518 ν4 ＝25.43 r8 ＝36.3056 d8 ＝D1 r9 ＝56.4107 d9 ＝1.3000 n5 ＝1.83400 ν5 ＝37.16 r10＝18.5000 d10＝7.8000 n6 ＝1.69350 ν6 ＝52.23 r11＝−30.5942 d11＝0.2000 r12＝−32.3607 d12＝0.1200 n7 ＝1.75520 ν7 ＝27.51 r13＝−107.4977 d13＝0.4000 r14＝26.0987 d14＝3.6000 n8 ＝1.56873 ν8 ＝63.16 r15＝171.3289 d15＝D2 r16＝−68.8013 d16＝2.2000 n9 ＝1.80518 ν9 ＝25.43 r17＝−26.0000 d17＝1.0000 n10＝1.69680 ν10＝55.52 r18＝39.7894 d18＝D3 r19＝104.9399 d19＝4.6559 n11＝1.69350 ν11＝53.23 r20＝−28.0244 d20＝0.2000 r21＝275.1351 d21＝2.1846 n12＝1.56732 ν12＝42.83 r22＝−112.5718 d22＝2.8275 r23＝−23.3646 d23＝1.0000 n13＝1.84666 ν13＝23.88 r24＝−53.1058 d24＝D4 r25＝298.8749 d25＝2.0000 n14＝1.48749 ν14＝70.20 r26＝99.9366 f 28.83 50.07 82.6 D1 41.056 13.862 1.000 D2 4.500 11.888 21.794 D3 18.794 11.406 1.500 D4 0.800 8.188 18.094 fI＝−41.00、fII＝32.22、fIII＝−39.50 fIV＝48.02、fV＝−309.00 実施例３ ｆ＝28.83〜82.6 r1 ＝234.6874 d1 ＝2.2000 n1 ＝1.77250 ν1 ＝49.66 r2 ＝33.2781 d2 ＝6.5500 r3 ＝1403.2200 d3 ＝4.8500 n2 ＝1.78472 ν2 ＝25.68 r4 ＝−59.5339 d4 ＝0.2000 r5 ＝−99.8773 d5 ＝2.0000 n3 ＝1.77250 ν3 ＝49.66 r6 ＝54.8060 d6 ＝1.0000 r7 ＝30.9323 d7 ＝3.3000 n4 ＝1.80518 ν4 ＝25.43 r8 ＝35.4917 d8 ＝D1 r9 ＝54.6887 d9 ＝1.3000 n5 ＝1.83400 ν5 ＝37.16 r10＝19.2113 d10＝7.9000 n6 ＝1.69350 ν6 ＝52.23 r11＝−32.0987 d11＝0.3000 r12＝−32.7473 d12＝0.1300 n7 ＝1.75520 ν7 ＝27.51 r13＝−126.1537 d13＝0.2000 r14＝29.5882 d14＝4.1000 n8 ＝1.61700 ν8 ＝62.79 r15＝∞ d15＝D2 r16＝−84.6146 d16＝2.4000 n9 ＝1.80518 ν9 ＝25.43 r17＝−24.9687 d17＝1.9000 n10＝1.74100 ν10＝52.68 r18＝39.8998 d18＝D3 r19＝260.4055 d19＝4.5000 n11＝1.65830 ν11＝57.33 r20＝−28.2627 d20＝0.2000 r21＝97.0682 d21＝2.8500 n12＝1.56873 ν12＝63.16 r22＝−223.8897 d22＝3.1000 r23＝−24.8766 d23＝1.3000 n13＝1.84666 ν13＝23.78 r24＝−48.3445 d24＝D4 r25＝341.7938 d25＝2.0000 n14＝1.48749 ν14＝70.20 r26＝99.0461 f 28.83 50.07 82.6 D1 41.451 14.362 1.400 D2 4.200 11.507 21.385 D3 18.685 11.378 1.500 D4 0.800 8.107 17.985 fI＝−39.33、fII＝31.29、fIII＝−38.78 fIV＝49.76、fV＝−286.85 実施例４ ｆ＝28.83〜82.59 r1 ＝∞ d1 ＝1.7000 n1 ＝1.77250 ν1 ＝49.66 r2 ＝41.6265 d2 ＝7.5000 r3 ＝−205.8746 d3 ＝5.0000 n2 ＝1.80518 ν2 ＝25.43 r4 ＝−57.4124 d4 ＝0.1200 r5 ＝−131.4154 d5 ＝1.6000 n3 ＝1.77250 ν3 ＝49.66 r6 ＝51.7095 d6 ＝1.3000 r7 ＝42.7613 d7 ＝2.7000 n4 ＝1.84666 ν4 ＝23.88 r8 ＝65.8291 d8 ＝D1 r9 ＝55.8865 d9 ＝1.0000 n5 ＝1.80518 ν5 ＝25.43 r10＝29.8789 d10＝5.7625 n6 ＝1.61800 ν6 ＝63.38 r11＝−62.8337 d11＝0.1201 r12＝28.5260 d12＝5.0422 n7 ＝1.56883 ν7 ＝56.34 r13＝−71.3214 d13＝1.0000 n8 ＝1.69895 ν8 ＝30.12 r14＝121.9074 d14＝D2 r15＝−52.6037 d15＝2.5000 n9 ＝1.80518 ν9 ＝25.43 r16＝−19.9964 d16＝1.0000 n10＝1.73400 ν10＝51.49 r17＝46.9968 d17＝D3 r18＝145.9455 d18＝5.0000 n11＝1.60311 ν11＝60.70 r19＝−29.7003 d19＝0.1200 r20＝180.8469 d20＝3.2000 n12＝1.62280 ν12＝57.06 r21＝−56.7314 d21＝2.0000 r22＝−28.8215 d22＝1.4000 n13＝1.75520 ν13＝27.51 r23＝−88.7883 d23＝D4 r24＝8820.6908 d24＝3.0000 n14＝1.58144 ν14＝40.75 r25＝153.4398（非球面） f 28.83 50.06 82.59 D1 46.430 16.525 2.150 D2 5.195 12.148 22.537 D3 16.479 9.520 1.341 D4 0.901 7.861 16.039 fI＝−43.45、fII＝32.71、fIII＝−36.07 fIV＝44.34、fV＝−268.60 非球面係数 Ｅ＝0.35751×10-5 Ｆ＝−0.95883×10-8、Ｇ＝0.44019×10-10 Ｈ＝0.10117×10-12 logE＝−5.45 実施例５ ｆ＝28.83〜82.6 r1 ＝∞ d1 ＝1.7000 n1 ＝1.77250 ν1 ＝49.66 r2 ＝38.9774 d2 ＝7.5000 r3 ＝−173.0581 d3 ＝5.0000 n2 ＝1.80518 ν2 ＝25.43 r4 ＝−51.9483 d4 ＝0.1200 r5 ＝−114.0104 d5 ＝1.6000 n3 ＝1.77250 ν3 ＝49.66 r6 ＝56.9173 d6 ＝0.3000 r7 ＝46.2224 d7 ＝2.7000 n4 ＝1.84666 ν4 ＝23.88 r8 ＝72.0935 d8 ＝D1 r9 ＝59.9263 d9 ＝1.0000 n5 ＝1.80518 ν5 ＝25.43 r10＝27.9100 d10＝5.7625 n6 ＝1.61800 ν6 ＝63.38 r11＝−55.9660 d11＝0.1201 r12＝24.9735 d12＝5.0422 n7 ＝1.56883 ν7 ＝56.34 r13＝−99.5810 d13＝1.0000 n8 ＝1.69895 ν8 ＝30.12 r14＝85.4076 d14＝D2 r15＝−53.8357 d15＝2.5000 n9 ＝1.80518 ν9 ＝25.43 r16＝−17.4125 d16＝1.0000 n10＝1.73400 ν10＝51.49 r17＝36.9940 d17＝D3 r18＝103.2418 d18＝5.0000 n11＝1.60311 ν11＝60.70 r19＝−32.5644 d19＝0.1200 r20＝141.6981 d20＝3.2000 n12＝1.62280 ν12＝57.06 r21＝−44.8327 d21＝2.0000 r22＝−28.6664 d22＝1.4000 n13＝1.75520 ν13＝27.51 r23＝−134.6261 d23＝D4 r24＝4668.0899 d24＝3.0000 n14＝1.58144 ν14＝40.75 r25＝139.7173（非球面） f 28.83 50.07 82.6 D1 46.847 16.788 2.499 D2 5.200 11.575 20.145 D3 16.287 9.912 1.341 D4 0.901 7.431 15.903 非球面係数 Ｅ＝0.78121×10-6 Ｆ＝0.17870×10-7、Ｇ＝−0.89184×10-10 Ｈ＝0.24687×10-12 fI＝−43.01、fII＝31.54、fIII＝−32.09 fIV＝42.32、fV＝−247.77 log|E|＝−6.11 実施例６ ｆ＝28.83〜82.6 r1 ＝∞ d1 ＝1.7000 n1 ＝1.77250 ν1 ＝49.66 r2 ＝42.0864 d2 ＝7.5000 r3 ＝−196.4377 d3 ＝5.0000 n2 ＝1.80518 ν2 ＝25.43 r4 ＝−57.5902 d4 ＝0.1200 r5 ＝−309.3313 d5 ＝1.6000 n3 ＝1.77250 ν3 ＝49.66 r6 ＝37.0892 d6 ＝0.3000 r7 ＝33.4778 d7 ＝2.7000 n4 ＝1.84666 ν4 ＝23.88 r8 ＝50.0367 d8 ＝D1 r9 ＝49.4179 d9 ＝1.0000 n5 ＝1.80518 ν5 ＝25.43 r10＝20.7618 d10＝5.7625 n6 ＝1.61800 ν6 ＝63.38 r11＝−131.6619 d11＝0.1201 r12＝27.1908 d12＝5.0422 n7 ＝1.56883 ν7 ＝56.34 r13＝−123.8367 d13＝1.0000 n8 ＝1.69895 ν8 ＝30.12 r14＝−705.0095 d14＝D2 r15＝−56.6118 d15＝2.5000 n9 ＝1.80518 ν9 ＝25.43 r16＝−17.4637 d16＝1.0000 n10＝1.73400 ν10＝51.49 r17＝35.4847 d17＝D3 r18＝54.7819 d18＝5.0000 n11＝1.60311 ν11＝60.70 r19＝−27.5025 d19＝0.1200 r20＝99.2335 d20＝3.2000 n12＝1.62280 ν12＝57.06 r21＝−108.8269 d21＝2.0000 r22＝−25.8877 d22＝1.4000 n13＝1.75520 ν13＝27.51 r23＝−144.9976 d23＝D4 r24＝4667.1386 d24＝3.0000 n14＝1.58144 ν14＝40.75 r25＝139.7260（非球面） f 28.83 50.06 82.6 D1 43.973 16.590 3.630 D2 5.200 11.600 20.141 D3 16.310 9.872 1.342 D4 0.901 7.710 16.271 非球面係数 Ｅ＝0.12966×10-5 Ｆ＝0.35458×10-7、Ｇ＝−0.23352×10-9 Ｈ＝0.63627×10-12 fI＝−39.33、fII＝31.29、fIII＝−38.78 fIV＝49.76、fV＝−286.85 log|E|＝−5.89 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空気間隔、n1,n2,…は各レンズ
の屈折率、ν1,ν2,…は各レンズのアツベ数、fI,fII,f
III,fIV,fVは夫々各群の焦点距離、ｆは全系の焦点距離
である。Example 1 f = 28.83 to 82.65 r 1 = 301.1438 d 1 = 1.7000 n 1 = 1.777250 v 1 = 49.66 r 2 = 34.6023 d 2 = 6.0000 r 3 = 1026.5330 d 3 = 5.0000 n 2 = 1.78314 v 2 = 30.67 r 4 = -57.5866 d 4 = 0.1200 r 5 = -126.2926 d 5 = 1.6000 n 3 = 1.77250 ν 3 = 49.66 r 6 = 36.9559 d 6 = 1.8000 r 7 = 31.8795 d 7 = 2.7000 n 4 = 1.84666 ν 4 = 23.88 r 8 = 48.0676 d 8 = D 1 r 9 = 40.0421 d 9 = 1.1000 n 5 = 1.83400 ν 5 = 37.16 r 10 = 18.4499 d 10 = 7.8000 n 6 = 1.69680 ν 6 = 56.49 r 11 = −29.0797 d 11 = 1.1000 n 7 = 1.75520 v 7 = 27.51 r 12 = -118.4784 d 12 = 0.1200 r 13 = 33.4886 d 13 = 2.6000 n 8 = 1.61800 v 8 = 63.38 r 14 = 112.1534 d 14 = D 2 r 15 = -85.6126 d 15 = 2.2000 n 9 = 1.80518 ν 9 = 25.43 r 16 = -23.9196 d 16 = 1.0000 n 10 = 1.72020 ν 10 = 47.71 r 17 = 41.8498 d 17 = D 3 r 18 = 97.1229 d 18 = 5.000 n 11 = 1.64000 ν 11 = 60.09 r 19 = -31.0898 d 19 = 0.1200 r 20 = 133.1136 d 20 = 3.2000 n 12 = 1.67000 ν 12 57.33 r 21 = -59.2134 d 21 = 2.0000 r 22 = -28.2799 d 22 = 1.4000 n 13 = 1.87675 ν 13 = 37.39 r 23 = -191.3389 d 23 = D 4 r 24 = -366.2584 d 24 = 1.0000 n 14 = 1.75520 ν 14 = 27.51 r 25 = 594.6673 f 28.83 50.08 82.65 D 1 44.568 15.648 1.950 D 2 4.200 11.800 22.100 D 3 19.400 11.800 1.500 D 4 0.800 8.400 18.700 f I = -42.22, f II = 33.74, f III = -42.96 f IV = 49.98 f V = -300, Example 2 f = 28.83 to 82.6 r 1 = 387.1987 d 1 = 2.3387 n 1 = 1.77250 ν 1 = 49.66 r 2 = 35.5106 d 2 = 6.3000 r 3 = 423.2710 d 3 = 4.5000 n 2 = 1.78472 ν 2 = 25.71 r 4 = -64.1422 d 4 = 0.2000 r 5 = -148.5982 d 5 = 1.9344 n 3 = 1.77250 ν 3 = 49.66 r 6 = 43.9444 d 6 = 1.2846 r 7 = 30.0385 d 7 = 3.1865 n 4 = 1.80518 ν 4 = 25.43 r 8 = 36.3056 d 8 = D 1 r 9 = 56.4107 d 9 = 1.3000 n 5 = 1.83400 ν 5 = 37.16 r 10 = 18.5000 d 10 = 7.8000 n 6 = 1.69350 ν 6 = 52.23 r 11 = -30.5942 d 11 = 0.2000 r 12 = -32.3607 d 12 = 0.1200 n 7 = 1.75520 ν 7 = 27.51 r 13 = -107.4977 d 13 = 0.4000 r 14 = 26.0987 d 14 = 3.6000 n 8 = 1.56873 ν 8 = 63.16 r 15 = 171.3289 d 15 = D 2 r 16 = -68.8013 d 16 = 2.2000 n 9 = 1.80518 ν 9 = 25.43 r 17 = -26.0000 d 17 = 1.0000 n 10 = 1.69680 ν 10 = 55.52 r 18 = 39.7894 d 18 = D 3 r 19 = 104.9399 d 19 = 4.6559 n 11 = 1.69350 ν 11 = 53.23 r 20 = -28.0244 d 20 = 0.2000 r 21 = 275.1351 d 21 = 2.1846 n 12 = 1.56732 ν 12 = 42.83 r 22 = −112.5718 d 22 = 2.8275 r 23 = −23.3646 d 23 = 1.0000 n 13 = 1.84666 ν 13 = 23.88 r 24 = −53.1058 d 24 = D 4 r 25 = 298.8749 d 25 = 2.000 n 14 = 1.48749 ν 14 = 70.20 r 26 = 99.9366 f 28.83 50.07 82.6 D 1 41.056 13.862 1.000 D 2 4.500 11.888 21.794 D 3 18.794 11.406 1.500 D 4 0.800 8.188 18.094 f I = −41.00, f II = 32.22 , F III = −39.50 f IV = 48.02, f V = −309.00 Example 3 f = 28.83~82.6 r 1 = 234.6874 d 1 = 2.2000 n 1 = 1.77250 ν 1 = 49.66 r 2 = 33.2781 d 2 = 6.5500 r 3 = 1403.2200 d 3 = 4.8500 n 2 = 1.78472 ν 2 = 25.68 r 4 = -59.5339 d 4 = 0.2000 r 5 = -99.8773 d 5 = 2.0000 n 3 = 1.77250 ν 3 = 49.66 r 6 = 54.8060 d 6 = 1.0000 r 7 = 30.9323 d 7 = 3.3000 n 4 = 1.80518 ν 4 = 25.43 r 8 = 35.4917 d 8 = D 1 r 9 = 54.6887 d 9 = 1.3000 n 5 = 1.83400 ν 5 = 37.16 r 10 = 19.2113 d 10 = 7.9000 n 6 = 1.69350 ν 6 = 52.23 r 11 = -32.0987 d 11 = 0.3000 r 12 = -32.7473 d 12 = 0.1300 n 7 = 1.75520 ν 7 = 27.51 r 13 = -126.1537 d 13 = 0.2000 r 14 = 29.5882 d 14 = 4.1000 n 8 = 1.61700 ν 8 = 62.79 r 15 = ∞ d 15 = D 2 r 16 = -84.6146 d 16 = 2.4000 n 9 = 1.80518 ν 9 = 25.43 r 17 = -24.9687 d 17 = 1.9000 n 10 = 1.74100 ν 10 = 52.68 r 18 = 39.8998 d 18 = D 3 r 19 = 260.4055 d 19 = 4.5000 n 11 = 1.65830 ν 11 = 57.33 r 20 = -28.2627 d 20 = 0.2000 r 21 = 97.0682 d 21 = 2.8 500 n 12 = 1.56873 ν 12 = 63.16 r 22 = -223.8897 d 22 = 3.1000 r 23 = -24.8766 d 23 = 1.3000 n 13 = 1.84666 ν 13 = 23.78 r 24 = -48.3445 d 24 = D 4 r 25 = 341.7938 d 25 = 2.000 n 14 = 1.48749 ν 14 = 70.20 r 26 = 99.0461 f 28.83 50.07 82.6 D 1 41.451 14.362 1.400 D 2 4.200 11.507 21.385 D 3 18.685 11.378 1.500 D 4 0.800 8.107 17.985 f I = −39.33, f II = 31.29, f III = −38.78 f IV = 49.76, f V = −286.85 Example 4 f = 28.83 to 82.59 r 1 = ∞ d 1 = 1.7000 n 1 = 1.777250 v 1 = 49.66 r 2 = 41.6265 d 2 = 7.5000 r 3 = −205.8746 d 3 = 5.0000 n 2 = 1.805518 v 2 = 25.43 r 4 = -57.4124 d 4 = 0.1200 r 5 = -131.4154 d 5 = 1.6000 n 3 = 1.77250 ν 3 = 49.66 r 6 = 51.7095 d 6 = 1.3000 r 7 = 42.7613 d 7 = 2.7000 n 4 = 1.84666 ν 4 = 23.88 r 8 = 65.8291 d 8 = D 1 r 9 = 55.8865 d 9 = 1.0000 n 5 = 1.80518 ν 5 = 25.43 r 10 = 29.8789 d 10 = 5.7625 n 6 = 1.61800 ν 6 = 63.38 r 11 = -62.8337 d 11 = 0.1201 r 12 = 28.5260 d 12 = 5.0422 n 7 = 1.56883 ν 7 = 56.34 r 13 = -71.3214 d 13 = 1.0000 n 8 = 1.69895 ν 8 = 30.12 r 14 = 121.9074 d 14 = D 2 r 15 = -52.6037 d 15 = 2.5000 n 9 = 1.80518 v 9 = 25.43 r 16 = -19.9964 d 16 = 1.0000 n 10 = 1.73400 v 10 = 51.49 r 17 = 46.9968 d 17 = D 3 r 18 = 145.9455 d 18 = 5.0000 n 11 = 1.60311 v 11 = 60.70 r 19 = -29.7003 d 19 = 0.1200 r 20 = 180.8469 d 20 = 3.2000 n 12 = 1.62280 ν 12 = 5 7.06 r 21 = -56.7314 d 21 = 2.0000 r 22 = -28.8215 d 22 = 1.4000 n 13 = 1.75520 ν 13 = 27.51 r 23 = -88.7883 d 23 = D 4 r 24 = 8820.6908 d 24 = 3.0000 n 14 = 1.58144 ν 14 = 40.75 r 25 = 153.4398 (aspheric surface) f 28.83 50.06 82.59 D 1 46.430 16.525 2.150 D 2 5.195 12.148 22.537 D 3 16.479 9.520 1.341 D 4 0.901 7.861 16.039 f I = -43.45, f II = 32.71, f III =- 36.07 f IV = 44.34, f V = −268.60 Aspherical surface coefficient E = 0.35751 × 10 −5 F = −0.95883 × 10 −8 , G = 0.44019 × 10 −10 H = 0.11017 × 10 −12 logE = −5.45 Example 5 f = 28.83 to 82.6 r 1 = ∞d 1 = 1.7000 n 1 = 1.77250 ν 1 = 49.66 r 2 = 38.9774 d 2 = 7.5000 r 3 = -173.0581 d 3 = 5.000 n 2 = 1.805518 ν 2 = 25.43 r 4 = -51.9483 d 4 = 0.1200 r 5 = -114.0104 d 5 = 1.6000 n 3 = 1.77250 ν 3 = 49.66 r 6 = 56.9173 d 6 = 0.3000 r 7 = 46.2224 d 7 = 2.7000 n 4 = 1.84666 ν 4 = 23.88 r 8 = 72.0935 d 8 = D 1 r 9 = 59.9263 d 9 = 1.0000 n 5 = 1.80518 ν 5 = 25.43 r 10 = 27.9100 d 10 = 5.7625 n 6 = 1.61800 ν 6 = 63.38 r 11 = -55.9660 d 11 = 0.1201 r 12 = 24.9735 d 12 = 5.0422 n 7 = 1.56883 ν 7 = 56.34 r 13 = -99.5810 d 13 = 1.0000 n 8 = 1.69895 ν 8 = 30.12 r 14 = 85.4076 d 14 = D 2 r 15 = -53.8357 d 15 = 2.5000 n 9 = 1.80518 ν 9 = 25.43 r 16 = -17.4125 d 16 = 1.0000 n 10 = 1.73400 ν 10 = 51.49 r 17 = 36.9940 d 17 = D 3 r 18 = 103.2418 d 18 = 5.000 n 11 = 1.60311 ν 11 = 60.70 r 19 = -32.5644 d 19 = 0.1200 r 20 = 141.6981 d 20 = 3.2000 n 12 = 1.62280 ν 12 = 57.06 r 21 = -44.8327 d 21 = 2.0000 r 22 = -28.6664 d 22 = 1.4000 n 13 = 1.75520 ν 13 = 27.51 r 23 = −134.6261 d 23 = D 4 r 24 = 4668.0899 d 24 = 3.0000 n 14 = 1.58144 ν 14 = 40.75 r 25 = 139.7173 (aspheric surface) f 28.83 50.07 82.6 D 1 46.847 16.788 2.499 D 2 5.200 11.575 20.145 D 3 16.287 9.912 1.341 D 4 0.901 7.431 15.903 Aspherical coefficient E = 0.78121 × 10 -6 F = 0.17870 × 10 -7 , G = −0.89184 × 10 -10 H = 0.24687 × 10 -12 f I = -43.01, f II = 31.54, f III = -32.09 f IV = 42.32, f V = -247.77 log | E | = −6.11 Example 6 f = 28.83 to 82.6 r 1 = ∞ d 1 = 1.7000 n 1 = 1.77250 ν 1 = 49.66 r 2 = 42.0864 d 2 = 7.5000 r 3 = −196.4377 d 3 = 5.0000 n 2 = 1.80518 ν 2 = 25.43 r 4 = -57.5902 d 4 = 0.1200 r 5 = -309.3313 d 5 = 1.6000 n 3 = 1.77250 ν 3 = 49.66 r 6 = 37.0892 d 6 = 0.3000 r 7 = 33.4778 d 7 = 2.7000 n 4 = 1.84666 ν 4 = 23.88 r 8 = 50.0367 d 8 = D 1 r 9 = 49.4179 d 9 = 1.0000 n 5 = 1.80518 ν 5 = 25.43 r 10 = 20.7618 d 10 = 5.7625 n 6 = 1.61800 ν 6 = 63.38 r 11 = −131.6619 d 11 = 0.1201 r 12 = 27.1908 d 12 = 5.0422 n 7 = 1.56883 ν 7 = 56.34 r 13 = −123.8367 d 13 = 1.0000 n 8 = 1.69895 ν 8 = 30.12 r 14 = −705.0095 d 14 = D 2 r 15 = -56.6118 d 15 = 2.5000 n 9 = 1.80518 ν 9 = 25.43 r 16 = -17.4637 d 16 = 1.0000 n 10 = 1.73400 ν 10 = 51.49 r 17 = 35.4847 d 17 = D 3 r 18 = 54.7819 d 18 = 5.0000 n 11 = 1.60311 ν 11 = 60.70 r 19 = -27.5025 d 19 = 0.1200 r 20 = 99.2335 d 20 = 3.2000 n 12 1.62280 ν 12 = 57.06 r 21 = -108.8269 d 21 = 2.0000 r 22 = -25.8877 d 22 = 1.4000 n 13 = 1.75520 ν 13 = 27.51 r 23 = -144.9976 d 23 = D 4 r 24 = 4667.1386 d 24 = 3.0000 n 14 = 1.58144 ν 14 = 40.75 r 25 = 139.7260 (aspherical surface) f 28.83 50.06 82.6 D 1 43.973 16.590 3.630 D 2 5.200 11.600 20.141 D 3 16.310 9.872 1.342 D 4 0.901 7.710 16.271 Aspherical coefficient E = 0.12966 × 10 -5 F = 0.35458 × 10 −7 , G = −0.23352 × 10 −9 H = 0.63627 × 10 −12 f I = −39.33, f II = 31.29, f III = −38.78 f IV = 49.76, f V = −286.85 log | E | = −5.89 where r 1 , r 2 , ... is the radius of curvature of each lens surface, d 1 , d 2 , ……
The thickness and air space of the lens, n 1, n 2, ... is the refractive index of each lens, ν 1, ν 2, ... are Abbe's numbers of respective lenses, f I, f II, f
III , f IV and f V are the focal lengths of the respective groups, and f is the focal length of the entire system.
実施例１は、第１図に示すレンズ構成で第１群は負レ
ンズ，正レンズ，負レンズ，正レンズよりなり、第２群
は３枚接合レンズ，正レンズよりなり、第３群は２枚接
合レンズよりなり、第４群は正レンズ，正レンズ，負レ
ンズよりなり、第５群は１枚の負レンズよりなる。In the first embodiment, the first lens unit has a negative lens, a positive lens, a negative lens, and a positive lens, the second lens unit includes a triplet lens, a positive lens, and the third lens unit has a lens configuration shown in FIG. The fourth group is composed of a positive lens, a positive lens, and a negative lens, and the fifth group is composed of one negative lens.
この実施例１のｆ＝28.8,f＝50.1,f＝82.7における収
差状況は、夫々第７図，第８図，第９図に示す通りであ
る。The aberration conditions at f = 28.8, f = 50.1, and f = 82.7 in the first embodiment are as shown in FIGS. 7, 8, and 9, respectively.
実施例２は、第２図に示すレンズ構成で、第２図が３
枚接合レンズの３枚目のレンズを分離したもので、２枚
接合レンズ，負レンズ，正レンズよりなる。Example 2 has a lens configuration shown in FIG.
A third cemented lens in which the third lens is separated, and is composed of a two cemented lens, a negative lens, and a positive lens.
この実施例のｆ＝28.83,f＝50.07,f＝82.6の収差状況
は夫々第10図，第11図，第12図に示す通りである。The aberrations at f = 28.83, f = 50.07, and f = 82.6 in this embodiment are as shown in FIGS. 10, 11, and 12, respectively.
実施例３は第３図に示す通りで、ｆ＝28.83,f＝50.0
7,f＝82.6の収差状況は夫々第13図，第14図，第15図に
示す通りである。Example 3 is as shown in FIG. 3, where f = 28.83, f = 50.0
The aberration conditions at 7, f = 82.6 are as shown in FIGS. 13, 14, and 15, respectively.
実施例４は、第４図に示す通りで、第２群が２枚接合
レンズ二つより構成されている。この実施例のｆ＝28.8
3,f＝50.06,f＝82.59の収差状況は夫々第16図，第17
図，第18図に示す通りである。In the fourth embodiment, as shown in FIG. 4, the second group includes two cemented lenses. F = 28.8 in this embodiment
The aberrations at 3, f = 50.06 and f = 82.59 are shown in FIGS. 16 and 17, respectively.
As shown in FIG.
実施例５は、第５図の通りでｆ＝28.83,f＝50.07,f＝
82.6の収差状況は夫々第19図，第20図，第21図に示す通
りである。In Example 5, as shown in FIG. 5, f = 28.83, f = 50.07, f =
The aberration conditions of 82.6 are as shown in FIGS. 19, 20, and 21, respectively.
実施例６は、第６図に示す通りでｆ＝28.83,f＝50.0
6,f＝82.6の収差状況は夫々第22図，第23図，第24図に
示す通りである。In Example 6, as shown in FIG. 6, f = 28.83, f = 50.0
The aberration conditions at 6, f = 82.6 are as shown in FIGS. 22, 23, and 24, respectively.
尚各実施例とも絞りは第２群と第３群の間に配置して
ある。又実施例4,5,6はいずれも最も像側の面が非球面
である。In each embodiment, the diaphragm is disposed between the second and third lens units. In all of Examples 4, 5, and 6, the surface closest to the image is an aspheric surface.
本発明のズームレンズは、コンパクトでしかも軸外性
能が良好で軸外像面が平坦で製造誤差があつても性能が
安定している。The zoom lens of the present invention is compact, has good off-axis performance, has a flat off-axis image plane, and has stable performance even if there is a manufacturing error.
第１図乃至第６図は夫々本発明ズームレンズの実施例１
乃至実施例６の断面図、第７図乃至第９図は実施例１の
収差曲線図、第10図乃至第12図は実施例２の収差曲線
図、第13図乃至第15図は実施例３の収差曲線図、第16図
乃至第18図は実施例４の収差曲線図、第19図乃至第21図
は実施例５の収差曲線図、第22図乃至第24図は実施例６
の収差曲線図である。1 to 6 show a first embodiment of the zoom lens of the present invention, respectively.
FIGS. 7 to 9 are aberration curve diagrams of the first embodiment, FIGS. 10 to 12 are aberration curve diagrams of the second embodiment, and FIGS. 13 to 15 are examples of the embodiment. FIGS. 16 to 18 are aberration curve diagrams of the fourth embodiment, FIGS. 19 to 21 are aberration curve diagrams of the fifth embodiment, and FIGS. 22 to 24 are the sixth embodiment.
FIG. 4 is an aberration curve diagram of FIG.
Claims (4)
持つ第２群と、負の屈折力を持つ第３群と、正の屈折力
を持つ第４群と、これに続いて最も像側に配置された負
の屈折力の第５群とよりなり、広角端から望遠端への変
倍に際して、第１群と第２群、第３群と第４群の間隔が
減少し、第２群と第３群、第４群と第５群の間隔が増大
するように各群が移動することにより変倍を行ない、以
下の条件を満足するズームレンズ。 （１） 3.5＜|fV/fW|＜35 （２） 0.7＜fI/fIII＜1.5 （３） 1.0＜fII/fW＜1.5 ただしfWは広角側での全系の焦点距離、fIは第１群の焦
点距離、fIIは第２群の焦点距離、fIIIは第３群の焦点
距離、fVは第５群の焦点距離である。A first group having a negative refractive power, a second group having a positive refractive power, a third group having a negative refractive power, a fourth group having a positive refractive power, And a fifth lens unit having a negative refractive power disposed closest to the image side. When zooming from the wide-angle end to the telephoto end, the distance between the first and second units and the distance between the third and fourth units is changed. The zoom lens satisfies the following condition by performing zooming by moving each group so that the distance between the second and third groups decreases and the distance between the fourth and fifth groups increases. (1) 3.5 <| f V / f W | <35 (2) 0.7 <f I / f III <1.5 (3) 1.0 <f II / f W <1.5 However f W is the focal of the entire system at the wide-angle side distance, the f I is the focal length, f II of the first group is the focal length, f III of the second group is the focal length, f V of the third group is the focal length of the fifth group.
件を満足する特許請求の範囲（１）のズームレンズ。 （４） −１＜（rV1＋rV2）／（rV1−rV2）＜３ ただしrV1は第５群の物体側の面の曲率半径、rV2は第
５群の像側の面の曲率半径である。2. The zoom lens according to claim 1, wherein the fifth unit includes a negative single lens and satisfies the following condition. (4) -1 <(r V1 + r V2 ) / (r V1 −r V2 ) <3 where r V1 is the radius of curvature of the object side surface of the fifth group, and r V2 is the image side surface of the fifth group. The radius of curvature.
む特許請求の範囲（１）又は（２）のズームレンズ。 （５） −７＜log|E|＜−４ ただしｘは非球面の光軸上の点（面の頂点）を原点とし
て光軸に垂直な方向にｓだけ離れた点における光軸方向
の座標、ｒは近軸曲率半径、E,F,G.…は非球面係数であ
る。尚Ｅは非球面が物体側の面の場合は負、像側の面の
場合は正とする。3. The zoom lens according to claim 1, wherein the fifth unit includes an aspheric surface satisfying the following condition. (5) -7 <log | E | <-4, where x is a coordinate in the optical axis direction at a point separated by s in a direction perpendicular to the optical axis with respect to the point on the optical axis of the aspheric surface (vertex of the surface) as the origin. , R are paraxial radii of curvature, and E, F, G,... Are aspherical coefficients. Note that E is negative when the aspheric surface is a surface on the object side, and positive when the aspheric surface is a surface on the image side.
（１）、（２）又は（３）のズームレンズ。 （６） ０＜1/r1＜0.01 ただしr1は第１面の曲率半径である。4. The zoom lens according to claim 1, wherein said zoom lens satisfies the following condition. (6) 0 <1 / r 1 <0.01 where r 1 is the radius of curvature of the first surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103825A JP2587218B2 (en) | 1986-05-08 | 1986-05-08 | Zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61103825A JP2587218B2 (en) | 1986-05-08 | 1986-05-08 | Zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62262013A JPS62262013A (en) | 1987-11-14 |
| JP2587218B2 true JP2587218B2 (en) | 1997-03-05 |
Family
ID=14364188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61103825A Expired - Fee Related JP2587218B2 (en) | 1986-05-08 | 1986-05-08 | Zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2587218B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7184221B2 (en) | 2002-12-16 | 2007-02-27 | Canon Kabushiki Kaisha | Zoom lens system and camera incorporating the same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3450544B2 (en) * | 1995-09-01 | 2003-09-29 | ペンタックス株式会社 | Endoscope objective lens |
| JP2004309684A (en) * | 2003-04-04 | 2004-11-04 | Olympus Corp | Imaging optical system and image pickup device using the same |
| JP2018205340A (en) * | 2017-05-30 | 2018-12-27 | マクセル株式会社 | Cemented lens for wide angle imaging lens |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5995315A (en) * | 1982-11-22 | 1984-06-01 | Haruo Matsumura | Nox removing boiler |
-
1986
- 1986-05-08 JP JP61103825A patent/JP2587218B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7184221B2 (en) | 2002-12-16 | 2007-02-27 | Canon Kabushiki Kaisha | Zoom lens system and camera incorporating the same |
| US7196851B2 (en) | 2002-12-16 | 2007-03-27 | Canon Kabushiki Kaisha | Zoom lens system and camera incorporating the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62262013A (en) | 1987-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2538526B2 (en) | Zoom lens | |
| JP2628633B2 (en) | Compact zoom lens | |
| JP2870035B2 (en) | High-magnification zoom lens system including wide-angle range | |
| JP3292510B2 (en) | Zoom lens | |
| JP3162114B2 (en) | Two-group zoom lens | |
| US5100223A (en) | Zoom lens | |
| JPH07253542A (en) | Zoom lens | |
| JP3503911B2 (en) | Eyepiece zoom lens system | |
| JP3369598B2 (en) | Zoom lens | |
| US4364641A (en) | Wide angle zoom lens | |
| JP3038350B2 (en) | Wide-angle zoom lens | |
| JPH06294932A (en) | Zoom lens | |
| JP3063035B2 (en) | Zoom lens | |
| JP2587218B2 (en) | Zoom lens | |
| JPH05127082A (en) | Small-sized zoom lens | |
| JP3015167B2 (en) | Wide-angle zoom lens | |
| JP2579215B2 (en) | Zoom lens | |
| JP2947475B2 (en) | Zoom lens | |
| JP4444416B2 (en) | Zoom lens | |
| JP3162113B2 (en) | Small and bright zoom lens | |
| JP3262235B2 (en) | Wide-angle zoom lens | |
| JP3514851B2 (en) | Zoom lens | |
| JP2782720B2 (en) | Zoom lens | |
| JP3245469B2 (en) | Two-group zoom lens | |
| JP3174100B2 (en) | Small zoom lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |