JPS5879213A - Wide angle zoom lens of high variable power - Google Patents

Wide angle zoom lens of high variable power

Info

Publication number
JPS5879213A
JPS5879213A JP56177451A JP17745181A JPS5879213A JP S5879213 A JPS5879213 A JP S5879213A JP 56177451 A JP56177451 A JP 56177451A JP 17745181 A JP17745181 A JP 17745181A JP S5879213 A JPS5879213 A JP S5879213A
Authority
JP
Japan
Prior art keywords
lens
lens group
group
zoom
positive
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.)
Pending
Application number
JP56177451A
Other languages
Japanese (ja)
Inventor
Keiji Ikemori
敬二 池森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP56177451A priority Critical patent/JPS5879213A/en
Priority to US06/435,560 priority patent/US4509833A/en
Publication of JPS5879213A publication Critical patent/JPS5879213A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
    • G02B15/177—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/143—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only
    • G02B15/1435—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative
    • G02B15/143503—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having three groups only the first group being negative arranged -+-

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To provide a compact zoom lens of high variable powers by moving the 2nd group in only one direction and making the space between the 2nd group and the 3rd group wider in the zooming position at the telephoto end than in the zooming position at the wide angle end satisfying specific conditional equations. CONSTITUTION:This zooming lens has the divergent 1st lens group, the convergent 2nd lens group and the divergent 3rd lens group successively from an object side and performs zooming by the movement of these three lens groups. Said zoom lens is so constituted that the 1st lens group has at least one positive lens on the object side and image plane side, that the 2nd lens group has an aperture stop, at least 3 pieces of positive lenses and at least one piece of negative lens and that the 3rd lens group has at least one positive lens on the image plane side. The lens is so constituted as to satisfy conditional equations (1)-(3). Thus the compact wide angle zoom lens of high variable powers and high performance is realized.

Description

【発明の詳細な説明】 本発明は１４変倍の広角ズームレンズでコンパクトで高
性能４ＴＴｎ３５ｍカメラのズームレンズＫＩＱするも
ので゛ある。DETAILED DESCRIPTION OF THE INVENTION The present invention is a compact, high-performance 4TTn 35m camera zoom lens KIQ with a wide-angle zoom lens with 14 variable magnification.

従来、物体側より順に発散性６第ルンズ群。Conventionally, there is a diverging sixth lun group in order from the object side.

収斂性の第２レンズ。、そして発散性のＩＩ３レンズ群
で構成され、これら３つのレンズ群の１１隔を変えてズ
ーミングを行うズームレンズが１−Ｐ３９８３０７中特
開昭５４−２６７５４等でノ提案されでいる。しかしこ
れらの従来例は、ｍ看は高変倍であるがレンズ系が大型
化であり、後者は歪曲収差は少ないがズーム比が２倍程
−であシ。Avergent second lens. A zoom lens which is composed of three divergent II lens groups and performs zooming by changing the 11 interval between these three lens groups has been proposed in 1-P398307 and JP-A-54-26754. However, these conventional examples have a high zoom ratio but have large lens systems, and the latter has little distortion but has a zoom ratio of about 2x.

高変倍のズームレンズとは言えなかった０又共に、第２
レンズ群と第３レンズ詳との間隔が望遠端より広角端の
方が広く、なりている一つまりズーンングによるレンズ
群の移動量は、第２レンズ群よシ第３レンズ評の方が大
きくなうて−るっ、一般に上記のような屈折力配置を有
するレンズ群構成で高倍率でしかも°コンパクトなズー
ムレンズを実現し−ようとすると、広角端のズーム位置
でパックフォーカスが短かくなる傾向になる。ｔ＊、第
２レンズ群内に絞り誓設叶ると望遠端のズーム位置での
開放絞り径が増大する傾向になる。従って従来例の屈折
力配置を有するズームレンズで第２レンズ詳と第３レン
ズ詳の移動量が前記のような関係に６るとズーム比を高
倍率にすると広角端のズーム載置でのバクタフ・肴−カ
スはより短かくなりス望遠端の絞り径はより増、大の方
向に行き好ましくない。The second zoom lens, which could not be called a high-power zoom lens,
The distance between the lens group and the third lens is wider at the wide-angle end than at the telephoto end, which means that the amount of movement of the lens group due to zooming is greater at the third lens than at the second lens group. In general, when trying to create a compact zoom lens with high magnification using a lens group configuration with the above-mentioned refractive power arrangement, the pack focus tends to become short at the wide-angle end zoom position. become. t*, when the aperture is set in the second lens group, the open aperture diameter at the telephoto end zoom position tends to increase. Therefore, in a zoom lens having the conventional refractive power arrangement, if the amount of movement of the second lens detail and the third lens detail is in the relationship 6 as described above, and the zoom ratio is set to a high magnification, the zoom lens at the wide-angle end will be - The grain becomes shorter and the diameter of the aperture at the telephoto end increases, which is not desirable.

３５ミリノ量レフレツクスカメラ用交換レンズに７おい
ては、少なく、ともミラーアップが可能なスペースを有
する程度のバッ！フォーカス、が必要であり、また絞り
、掻が大きくなると鏡筒の外径も増大してしまうのでガ
るべく絞夛径が小古い事が好ましい。従って上述の従来
例のズームレンズで高倍率でしかもコンパクト化なズー
ムレンズを実現することは非常に距離であう・た。The 35 mm reflex camera interchangeable lens 7 has at least enough back space to allow mirror-up! Focus is necessary, and as the aperture becomes larger, the outer diameter of the lens barrel also increases, so it is preferable that the aperture diameter is as small as possible. Therefore, it would be extremely difficult to realize a compact zoom lens with high magnification using the conventional zoom lens described above.

本発明は高変倍でしかもコンノＳ、クトな高性能のズー
ム、レンズを提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a high-performance zoom lens that has a high zoom ratio and is compact.

本２発明の目的を４成する為のズームレンズの！黴は上
述のズームタイプと同様であり、物体側よりＩＩＩＩＫ
発散性の第ルンズ群、収斂性の第２レンズ群そして発散
性の第３レンズ群を有し１鍵記３つのレンズ群の移動に
よりズーミングを行うズームレンズであるが、第２レン
ズ群は一方向にのみ移動し第２レンズ詳とＩＩ３レンズ
群との間隔は望遠端のズーム位置の方が広角端のズーム
位置より広く、第ルンズ・群、第２レン゛′ズ評そして
第３レンズ群Ｏ焦亨距離を各々／ｗｅｆ雪ｔ　ｆｓ　を
望遠端のズーム位置で、の全系の焦点距離をｆｔｅ第ル
ンズ群と第２レンズ群の広角端のズーム位置での間隔′
をｊｕｗ　ｅ　ｆｌＥ　２レンズ評と第３レンズ詳の望
遠端のズーム位−での間隔を４＊ｒ　　＋ としたとき なる東件を満足する事であるＯ 従来発散性の前群レンズと収斂性０後゛群レンズとで構
成される−いわゆる２群女−ムタイプの広角ズームレン
ズは、ズーム比が２倍ｍ＊であれば、高性能でしかも比
較的コンノ（クト化を図ることが害鳥であ抄実際に多く
のズームレンズが提案されているｏしかしながら２群ズ
ームタイプで°は２倍以上の倍率（例えば本発明のズー
ムレンズのごと＜２．８倍程度）゛を４現りようとする
と、後群レンズ内Ｋｌる絞１秒の開放径が魚竺に一４大
してズームレンズが大型化してしまう＠また。後群レン
ズＱズーミング（よるレン。A zoom lens for accomplishing the 2nd and 4th purpose of the invention! The mold is the same as the zoom type described above, and IIIK from the object side.
This is a zoom lens that has a diverging lens group, a convergent second lens group, and a diverging third lens group, and performs zooming by moving the three lens groups. The distance between the second lens group and II3 lens group is wider at the telephoto end zoom position than at the wide-angle end, and the distance between the second lens group, the second lens group, and the third lens group is wider at the telephoto end zoom position than at the wide-angle end. O focal length is respectively /wef snow t fs at the zoom position at the telephoto end, and fte is the focal length of the entire system of fte the distance between the second lens group and the second lens group at the zoom position at the wide-angle end.
It satisfies the following condition when the distance between the 2nd lens and the 3rd lens at the zoom position at the telephoto end is 4*r +.Conventional divergent front lens and convergent A wide-angle zoom lens of the so-called 2-group female type, which is composed of a 0-rear group lens, has a zoom ratio of 2x m*, and has high performance and is relatively compact. Actually, many zoom lenses have been proposed; however, two-group zoom types have a magnification of 2x or more (for example, the zoom lens of the present invention <2.8x). In this case, the aperture diameter of the aperture in the rear group lens will be increased by 14 times, making the zoom lens larger.

ズの移動量が魚激に増大しレンズ全長（・第２ビンズ詳
から像面までの距離）は広角端よ抄望遠端の方が長くな
ってしまいレンズ鏡筒の構造上コンパクト化を妨げる原
因となる。The amount of movement of the lens increases dramatically, and the overall length of the lens (distance from the second lens to the image plane) becomes longer at the telephoto end than at the wide-angle end, which is a factor that prevents compactness due to the structure of the lens barrel. becomes.

、そこで本発明は上記２群ズームタイプの収斂性後群４
レンズを正？屈折力の第２ビンズ詳と負の・屈折力の第
３し゛ノズ群の、２つのレンズ群に分゛け、それらの−
隅を広角端゛におｉて最小とし１望達側へのズーミング
に際し１．第２レンズ群の移動速度に対し第３レンズ群
が遅くなるように移動させている。この為に第２レンズ
群の正の屈折力を第２し／ズ詳とｌ［３レンズ群の合成
の屈　。Therefore, the present invention provides a convergent rear group 4 of the above-mentioned two-group zoom type.
Correct lens? It is divided into two lens groups: the second lens group with refractive power and the third lens group with negative refractive power.
When zooming to the desired side, set the corner to the minimum at the wide-angle end. The third lens group is moved at a slower speed than the second lens group. For this purpose, the positive refractive power of the second lens group is given by the second ratio /Z and l[the composite refractive power of the three lens groups].

折力よ勤強くしている。また、第３レンズｌｌＰのズー
ミングによる移動量は第２レンズ詳に比べ少ないえめ、
第２レンズ詳の少ない移動量でズーム倍率を大きくと゛
るととが可能となるｏｌ＊、ｓ望遠端では、第３レンズ
群が第２シンズ詳に対し広角端に比べ離れて位置してお
り、従来の２群ズームタイプとズーム倍率を同じにし九
時に比べて第ルンズ群はより第２レンズ詳に近づいてい
る。従って望遠端において第ルンズ群と第２レンズ評の
主点間隔を小さくすることかで′きこの結果望遠端で１
１！２レンズ評内に−る絞りの開放径を小さく出来るこ
とが可能となる。I am very hardworking. Also, the amount of movement of the third lens LLP due to zooming is smaller than that of the second lens.
At the telephoto end, where it is possible to increase the zoom magnification with a small amount of movement of the second lens, the third lens group is located further away from the second lens than at the wide-angle end. The zoom magnification is the same as the conventional two-group zoom type, and the second lens group is closer to the second lens than the 9 o'clock lens. Therefore, by reducing the distance between the principal points of the second lens group and the second lens group at the telephoto end, the result is 1.
It becomes possible to reduce the aperture diameter within the 1!2 lens size.

本発明で社従来の２詳ズ一本本弐に比べ、高倍率化と一
：Ｉ／パクト化を図るために第ルンズ群の屈折力をある
程度強く出来る０東件弐（υは第２レンズ詳の屈折力を
制課するものである。In the present invention, the refractive power of the second lens group can be strengthened to some extent in order to achieve higher magnification and 1:I/pact compared to the conventional two-lens lens (υ is the second lens lens). It imposes a refractive power.

なに、下限値以下で拡望遠端で縞ｌレンズ詳から発゛生
ずる補正過嘴の球面収差が急激に増え。What is surprising is that below the lower limit, the spherical aberration due to the over-correction beak that occurs from the fringe L lens details increases rapidly at the telephoto end.

これ會良好に補正することが困−となる０条件式（２）
は＠２レンズ群と第３レンズ群の屈折力を制磯する為で
ある。本発明では２弁移動ズームタイ′プで収斂性の後
群を′正レンズ群と負レンズ群に分けると考えた為に条
件式（２）の上限値を越えると、すなわち負レンズ群の
パワーを強くして行くと正レンズ群のパワー′も急激に
強くなるためコンパメト化には有利となるが広角端にお
いて非点収差が急激に補正不足となりさらにズーミング
による収差変動も増大し、また望遠端での球面収差を良
好に補正することが困−となる・逆に下限値を越えると
負・レンズの屈折力が−すぎると正レンズ群のパワーも
弱くなり３−移動としての働きが弱くかにコンパクト化
が困難となる。条件式（８）もコンパクト化と高性能化
を両・立させるための条件式で上限値以上で紘コンパク
ト化に祉有利であるが、ズーミングによる収差変動が増
大し、高性能化を維持出来なくなる。下限値以下では３
ｆ＃移動としての働きが弱くなシコンパクト化が困難と
なる。0 conditional expression (2), which is difficult to correct satisfactorily.
This is to control the refractive power of the second lens group and the third lens group. In the present invention, since the convergent rear group is considered to be divided into a positive lens group and a negative lens group in a two-valve moving zoom type, if the upper limit of conditional expression (2) is exceeded, that is, the power of the negative lens group is As the power is increased, the power of the positive lens group rapidly increases, which is advantageous for comperemetry, but at the wide-angle end, astigmatism suddenly becomes insufficiently corrected, and aberration fluctuations due to zooming increase, and at the telephoto end, astigmatism becomes insufficiently corrected.・Conversely, if the lower limit is exceeded, it becomes difficult to correct the spherical aberration of It becomes difficult to downsize. Conditional expression (8) is also a conditional expression for achieving both compactness and high performance, and if it exceeds the upper limit, it is advantageous for compactness, but aberration fluctuations due to zooming increase, making it impossible to maintain high performance. It disappears. 3 below the lower limit
Since the function of f# movement is weak, compactification becomes difficult.

基土のレンズ構成によ抄ズーム比２．８３倍。The lens configuration of the base provides a zoom ratio of 2.83x.

−角７３．ｆ〜２９．５０．Ｆナンバーｌ：４でコンパ
クトでしかも高性能ｆｉＴ’ｌ’Ｌ３５−カメラ用交換
ズームレンズを実現する゛ことができるが、ｌ！に良好
なる収差補正、ｔ−行うには次の条件を満足するのが好
ましいｏ　ｆｌｌ　ルンズーは少なくと、も１枚の正レ
ンズを置体！と像面側に有しておｈ第２レンズ降は開口
絞に及び少なくと４３枚の正レンズと少なくと４１＆Ｑ
負レンズを有し。-Angle 73. f~29.50. It is possible to realize a compact and high-performance fiT'l'L35-camera interchangeable zoom lens with an F number of 4, but l! In order to achieve good aberration correction, it is preferable to satisfy the following conditions. and the second lens on the image side has at least 43 positive lenses and at least 41&Q
It has a negative lens.

第３レンズ群は少なく７とも１枚の正レンズを像面側に
６有する事である。The third lens group has at least seven positive lenses and six on the image plane side.

まず、第１レンメ評の最も物体−に正レンズを配し広角
端での歪自収差ｔｍ正し・、電％會両側に正レンズを配
し＝・その電鍵のレンズとの間を収斂作用の空気レンズ
にし１．望遠端でこのレンズ群内の負レンズから発生す
る補正過蝿の球面収差を極めて良好に除去する。また第
、ｌ、レンズ群内に物体側に凹、のメニスカス形状の発
散作用の空−に゛ンズを設けることによ抄広角端でＯ非
点′収差を良好に補正することが出来る。この部所は４
１１に高性能を要求しなければなくてもよい。次に、第
２レンズｌＰ祉ある１ｉｆｔ屈折力が強い九め１補正子
足の球面収瞭の急激な発生″を防ぐたや少なくとも正レ
ンズは３枚以上・必要で１それらの中に少なくとも負レ
ンズ群が１枚必要で・Ｔｏｂ　ｏそして整２・レンズ群
４の前側主点をある１１度物体ｌｌ＃ｊ方ぺ位置させた
いために１負レン　′ズの物体側前方にある正レンズの
゛株数の方が後、方にある正レンズより多い方が良い。First, a positive lens is placed at the most object point in the first lens to correct the distortion and self-aberration tm at the wide-angle end, and a positive lens is placed on both sides of the electric key to create a convergence effect between the lens and the electric key lens. To the air lens 1. At the telephoto end, spherical aberration caused by overcorrection caused by the negative lens in this lens group is eliminated extremely well. Furthermore, by providing a meniscus-shaped diverging lens in the L-th lens group that is concave toward the object side, O astigmatism can be well corrected at the wide-angle end. This club is 4
It is not necessary if high performance is not required for 11. Next, the second lens, which has a strong refractive power, is necessary to prevent the sudden occurrence of spherical aberration. One lens group is required, and since we want to position the front principal point of lens group 4 at a certain 11 degrees toward the object, we need one negative lens. It is better to have more lenses than the positive lenses on the rear and sides.

また、絞りは収差をバランス良く補正する上、鏡筒構造
上第２レンズ群内に設けるのが良いが、必ずしも第２レ
ンズ群内になくともよい。さらに、第３レンズ群は、負
′の屈折力でズーミング中絞りに発生し品くなり、コン
パクト化を押し進やるに従い、この現象は顕著Ｋｔｋｂ
ろ従って本実施例の如く高性能化を維持するためには第
３レンズ群の最も像面側には少なくとも１枚の正レンズ
群を艷、し、閂・、の部所、から内向性のコマを発生さ
せ全体としてコマを除去する必要がある。Furthermore, in order to correct aberrations in a well-balanced manner, the aperture diaphragm is preferably provided within the second lens group in terms of lens barrel structure, but it does not necessarily have to be provided within the second lens group. Furthermore, the negative refractive power of the third lens group causes it to appear at the diaphragm during zooming, and as compactness advances, this phenomenon becomes more noticeable.
Therefore, in order to maintain high performance as in this embodiment, at least one positive lens group is installed closest to the image plane of the third lens group, and the introvert It is necessary to generate frames and remove them as a whole.

以上述べ友如く本発Ｉｊ！によれば後述する実施例に示
す如く高変倍でコンバク、ト化を図り九高性能な広角ズ
ームレンズ・を達成することができる。As stated above, this is the original Ij! According to this method, it is possible to achieve a high-performance wide-angle zoom lens with high zoom ratio and compactness, as shown in the embodiments described later.

次に本発明の数゛値実施例を示す。数値実ｍ例に＄１−
いてＲ１は物体側より履Ｋ１１ｉ番目のレンズ面の曲率
半径、）紘物体側より願に第１１＠のレンズ厚及び空気
間隔、　ＮＩとν量紘夫々物体側ω 夷ｊＩＩｆ１＄１　　Ｆ−１００−２１１３ＰＮＯ’−
１，４２隻−７１１Ｆ１．４実施例２　　Ｆ−１００−
雪８４６　　ＦＩＩＩＯ”１１１１−Ｌ＠　　３１社１
１１１Ｒ１−４１（Ｌ１２　　　Ｄ　ｌ−１（ＬＳＩ　
　　Ｎ　１−１．＠＠３１１　１　１−＠ａ？Ｒ！−４
！Ｕ２Ｇ、３１　　　Ｄ　２−　１４１Ｒ３−１１７，
１１Ｄ　　３−　　＆２ａ　　　Ｎ　　！−ＬＩＩ０４
００　　　ｖ　　＊−４Ｌ＠ＩＬ　４−　　　＠ＩＪＩ
　　、　Ｄ　４−ＪＬｉｌｌＩｌｌ　５−　　７０１１
１４　　　Ｄ　　６−１２Ｊ・　　Ｎ　　３ｍ１１３６
３・　　ｉ’　　３−Ｂ［４１Ｌ　６−　−１４Ｌ＠・
　　　Ｄ　　＠−２，１１Ｒ７−−１４７，０３Ｄ　７
−　　ｓ、８６　　　Ｎ　４−Ｌ１１４００　　ν　４
−４１＠Ｒ８−２４１７４Ｄ　　ｍ＝　　ａ、ｅｓＲ９
−１１９，７１１Ｄ　　１１−　７．６７　　　Ｎ−５
冒１．８４ｇ６４　　　ν　５−２１會ＲＩＧ−１？１
１雪Ｉ　　　ＤＩＧ−可・変Ｒ１１−１２１９０Ｄｌｌ
−１４，１！７　　　Ｎ　　８目１．７７雪６０　　ν
　６層４＊＠Ｒ１２−１００４４３ＤＩ２−　６．７４
Ｒ１３−８１７３ＤＩ３−　Ｈ，ｓｉｌ　　　Ｎ　　？
−１，７ｔＨＯｖ　　？−５０Ｒ１４−２４１１１１ｉ
　　　ＤＩ４目　＆３９Ｒ１５−７５，４２ＤＩ５−　
９．２１　　　Ｎ　５−ＩＪＯ３１１ｙ　　１！−＠α
１Ｒ１６−１５１１１７ＤＩ６−　３．３５゜、　　Ｒ
１７−１３５１Ｌ４１１１　　　ＤＩ？−７，６７ＩＩ
”１．ｌｌ４ｇｇ６　　ｊ９−雪１１Ｒ２０−−１５１
７０ＤＩ０−　　＆４７Ｒ２１−３１１７，１１０Ｄ２
１−　６．２６　　　Ｎｉｌ”１．６（１３４２シ１ｌ
−３１Ｌ＠’Ｒ２２−−’Ｄ２２−可変 Ｒ２７−”　　３０ｊ１７．８１ １１−　　１ｓＩＩＬＩ？　　　ｎｔ−ｔｉｓｘ　　　
Ｍｌ−１，６０３１１ν　１−６α７Ｉ＆　！”−１１
１！Ｉ（１２７Ｄ　２−　　（ＬＳ！Ｎｍ−＄４１１３
　　ＤＩ−４１３Ｍｌ−Ｌ？７鵞！！ＯＷ２−４ｍ６Ｂ
４■　　１翫２４　　、Ｄ４−１１９２ｍ１−　　Ｈ飯
’１８　　Ｄｉ−５２３Ｎｍ＝ｔ７７！５０　　　ｖｓ
−４９，６１＠”−＄４Ｌ１６　　　Ｄ　＠−，１４１
４虱１■　ＬｉＯ２，Ｉ７　　　Ｄ　７電　１９７　　
　Ｎ　４”−ＩＪＩＩＩ８０　　　ν　４■５翫５１畠
−３ｓ！Ｌ５ｍ　　　ＤＩ−ａ１７Ｂ　Ｉ−１１１７１
Ｄ　１１冨１１．６四　　Ｎ５創１１１０１５１８　　
　ν　Ｓ霞２５．４ｍｔｏ■　２１１ｅ、０７　　ＤＩ
Ｏ−可変Ｂ１１−　１２４９７　　　Ｄｌｌ−１ａ２１
１　　　Ｎ　ｇ”　１．７７２６０　　　ｋｌ　　＠”
”４！　１１１０１目３雪１３Ｌ４３　　　ＤＩ２−　
直５ＧＲ１？−一１７１４１１　　０１７−　亀５１　
　　Ｎ　ｌｌ−１，１１４６６１１１ν　１ｌ−２ａ、
！Ｂ１１−　　８直２！ｉ　　　Ｄｌｍｌ−１１，５０
１２６−−２６ＬＳ５ ｌ−一＼、 実施９９５　　Ｆ−Ｚｏｏ−２３１６ＦＮＯ−１：４　
２ｗｗＴ１５−３表７Next, numerical examples of the present invention will be shown. $1- for numerical example
R1 is the radius of curvature of the K11i-th lens surface from the object side,) the thickness and air distance of the 11th lens from the object side, NI and ν, respectively on the object side ω 夷jIIf1$1 F-100- 2113PNO'-
1,42 ships-711F1.4 Example 2 F-100-
Snow 846 FIIIO”1111-L @ 31 companies 1
111R1-41 (L12 D l-1 (LSI
N 1-1. @@311 1 1-@a? R! -4
! U2G, 31 D 2- 141R3-117,
11D 3- &2a N! -LII04
00 v *-4L@IL 4- @IJI
, D 4-JLillIll 5-7011
14 D 6-12J・N 3m1136
3・i' 3-B[41L 6- -14L@・
D @-2,11R7--147,03D 7
- s, 86 N 4-L11400 ν 4
-41@R8-24174D m= a, esR9
-119,711D 11- 7.67 N-5
1.84g64 ν 5-21 meeting RIG-1?1
1 Snow I DIG-Possible/Variable R11-12190Dll
-14,1!7 N 8th 1.77 snow 60 ν
6 layers 4*@R12-100443DI2- 6.74
R13-8173DI3-H, sil N?
-1,7tHOv? -50R14-241111i
DI4th &39R15-75,42DI5-
9.21 N 5-IJO311y 1! −@α
1R16-151117DI6- 3.35°, R
17-1351L4111 DI? -7,67II
"1.ll4gg6 j9-Snow11R20--151
70DI0- &47R21-3117,110D2
1-6.26 Nil”1.6 (1342 1l
-31L@'R22--'D22-Variable R27-" 30j17.81 11- 1sIILI? nt-tisx
Ml-1,60311ν 1-6α7I&! ”-11
1! I (127D 2- (LS!Nm-$4113
DI-413Ml-L? 7 goose! ! OW2-4m6B
4■ 1 rod 24, D4-1192m1-H rice'18 Di-523Nm=t77!50 vs
-49,61@”-$4L16 D @-,141
4.1 ■ LiO2, I7 D 7 electricity 197
N 4”-IJIII80 ν 4■5 51 hatake-3s!L5m DI-a17B I-11171
D 11 depth 11.64 N5 so 11101518
ν S haze 25.4mto■ 211e, 07 DI
O-Variable B11- 12497 Dll-1a21
1 N g” 1.77260 kl @”
"4! 11101st 3 snow 13L43 DI2-
Straight 5GR1? -1171411 017- Turtle51
N ll-1, 11466111ν 1l-2a,
! B11- 8 shifts 2! i Dlml-11,50
126--26LS5 l-1\, Implementation 995 F-Zoo-2316FNO-1:4
2wwT15-3 Table 7

【図面の簡単な説明】[Brief explanation of the drawing]

第６図から＃ＩｌＯ図までれ各々本発明の実施例１から
実施例５に対応す４る一収差図でｂる〇図中Ｍはメリデ
ィ゛オナルｇＩ！面、ｓ紘デジタル儂面である。 特許出願人　　キャノン株式余社Figures 6 to #IlO are four aberration diagrams corresponding to Examples 1 to 5 of the present invention, respectively. This is my side of Hiro Digital. Patent applicant: Canon Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] （１）物体側よりｊ１！に発散性の第ルンズ詳、収斂性
の第２レンズ群そして発゛散性の第３しｙズ詳を有し、
前記３つのレンズ−〇移動によりズーミングを行うズー
ムレンズにおいて。 前記＠２レンズ群は一方向にのみ移動し、前記第２レン
ズ群と前記第３し、ンズ詳と゛の間隔は望遠端のズーム
位置の寿が広角端のズーム位置よ勤広く、前記嬉ルンズ
詳、第２レンズ評、そして第３レンズ群の焦点距離管各
々ｆ＋　＊　Ｚｔ　ｔ　／ｓ　を望遠端のズーム位置で
の全一の焦点距離ｔｆ！、ＩＩ記第ルンズ評と鍵記嬉、
２レンズ群の広角端のズーム位置での間隔をｊｌｎＦ　
＊−記ＩＩ２レンズ群と繍記第３レンズ詳の望遠端のズ
ーム位置での間隔上４１！″。 としたとき 　ｆｌ　１ ０．４　　＜　−＜　　０．９５ ｆテ ｏ、ｏ　１＜−！＝’　＜　’０．５ 　　ｆｓｌ ｏ、ｏぎ＜　ｊｎ？　’　＜　０．９ １１！Ｗ 、なる条件を満足する事を特徴とする高変倍広角ズーム
レンズ０(1) j1 from the object side! has a diverging lens group, a convergent second lens group, and a diverging third lens group;
In a zoom lens that performs zooming by moving the three lenses described above. The @2 lens group moves only in one direction, and the distance between the second lens group and the third lens group is such that the life of the zoom position at the telephoto end is wider than the zoom position at the wide-angle end, and the distance between the second lens group and the third lens group is such that , the second lens evaluation, and the focal length tube of the third lens group, each f+ * Zt t /s is the total focal length tf at the telephoto end zoom position! , Part II Runs Review and Key Notes,
The distance between the two lens groups at the wide-angle end zoom position is jlnF
*-The distance between the II 2nd lens group and the 3rd lens at the zoom position at the telephoto end is 41! ''. When fl 1 0.4 <-< 0.95 fteo, o 1 <-!='<'0.5 fsl o, ogi < jn? '< 0.9 11!W, it becomes A high variable power wide-angle zoom lens that satisfies the following conditions: （２）　前記第ルンズ群は少なくとも１枚の正レンズを
物体側と僧面倒に有しており、呻記第。 ２しｙズ群は開口絞り及び少なくとも３枚の正レンズと
少゛なくと、も１枚の負レンズを實１、―配第３レシズ
群は少な、くとも１枚の正レンズを儂面側に有する事を
特徴とする特許請求の範囲第１項、記載の高変倍広角ズ
ームレンズ０(2) The lens group has at least one positive lens on the object side and on the lens side. The second lens group has an aperture stop, at least three positive lenses, and at least one negative lens.The third lens group has at least one positive lens. A high variable power wide-angle zoom lens 0 according to claim 1, characterized in that
JP56177451A 1981-10-28 1981-11-05 Wide angle zoom lens of high variable power Pending JPS5879213A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56177451A JPS5879213A (en) 1981-11-05 1981-11-05 Wide angle zoom lens of high variable power
US06/435,560 US4509833A (en) 1981-10-28 1982-10-21 High variable magnification wide angle zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56177451A JPS5879213A (en) 1981-11-05 1981-11-05 Wide angle zoom lens of high variable power

Publications (1)

Publication Number Publication Date
JPS5879213A true JPS5879213A (en) 1983-05-13

Family

ID=16031170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56177451A Pending JPS5879213A (en) 1981-10-28 1981-11-05 Wide angle zoom lens of high variable power

Country Status (1)

Country Link
JP (1) JPS5879213A (en)

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