JPH02135312A - Compact zoom lens of high variable magnification - Google Patents
Compact zoom lens of high variable magnificationInfo
- Publication number
- JPH02135312A JPH02135312A JP28780688A JP28780688A JPH02135312A JP H02135312 A JPH02135312 A JP H02135312A JP 28780688 A JP28780688 A JP 28780688A JP 28780688 A JP28780688 A JP 28780688A JP H02135312 A JPH02135312 A JP H02135312A
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- Prior art keywords
- lens
- lens group
- group
- wide
- magnification
- 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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- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、コンパクトな高変倍率ズームレンズに関する
ものでる。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a compact high-power zoom lens.
［従来の技術１
近年、カメラの全自動化が進み、多機能でありながら携
帯性の優れたコンパクトカメラに、ズームレンズを内蔵
して撮影伸域を広げることが一般に行なわれている。そ
のためズームレンズ自体が撮影光学系としてカメラシス
テム中に組込まれるために、コンパクトなレンズ系が必
要である。[Prior Art 1] In recent years, full automation of cameras has progressed, and it has become common practice to incorporate a zoom lens into compact cameras, which are multifunctional yet highly portable, to expand their photographic range. Therefore, since the zoom lens itself is incorporated into the camera system as a photographing optical system, a compact lens system is required.
この種のレンズ系は、いわゆる−眼レフカメラのように
ミラーを配置することを考慮する必要がなく、バックフ
ォーカスを短くすることが可能である。その、ために、
−眼レフカメラ用のように、その画角が広いレンズ系に
対しては、レトロフォーカスタイプにして後側主平面位
置を光学系の後側に配する必要がな（、逆にテレフォト
タイプとして、後側主平面位置をいくぶん物体側へ位置
させるような屈折力配置にすることが出来る。This type of lens system does not require consideration of arranging a mirror like a so-called eye reflex camera, and it is possible to shorten the back focus. for that,
- For lens systems with a wide angle of view, such as those for reflex cameras, there is no need to use a retrofocus type with the rear principal plane located at the rear of the optical system (on the contrary, there is no need to place the rear principal plane at the rear of the optical system). As a result, it is possible to arrange the refractive power so that the rear principal plane is located somewhat toward the object side.
基本的には、単焦点レンズをはじめとして多焦点切換え
式の変倍光学系や、特開昭５７−２０レンズ３号公報に
記載されたような２群ズームもテレフオドタイプのレン
ズ系である。更に２群ズームレンズの発展形として、そ
の特定のレンズ群を分割して収差補正の改善を試みたも
のや、変倍率を分担させた３群ズームレンズが提供され
ている。更に四つのレンズ群にて構成し、可動群を３に
した４群ズームレンズが特開昭６０−５７８１４号に記
載されている。Basically, single focus lenses, multifocal switching type variable magnification optical systems, and two-group zooms such as those described in Japanese Patent Application Laid-Open No. 57-20 Lens No. 3 are telephoto lens systems. . Furthermore, as an advanced version of the two-group zoom lens, there have been provided those in which a specific lens group is divided to improve aberration correction, and three-group zoom lenses in which the variable magnification is shared. Further, a four-group zoom lens consisting of four lens groups and three movable groups is described in JP-A-60-57814.
［発明が解決しようとする課題］
上記のズームレンズは、変倍比が１．５からせいぜい２
程度であり、口径比も小さく実用面では不十分である。[Problem to be solved by the invention] The above zoom lens has a variable power ratio of 1.5 to 2 at most.
The aperture ratio is also small, making it insufficient for practical use.
これに対して本出願人は、変倍比と光学性能の向上を意
図して特開昭６３−４３１１５号公報記載の４群ズーム
レンズを開発した。又このズームレンズの機構を簡略化
したものとして特開昭６３−１５３５１１号公報に記載
されたレンズ系等を提案したにれらのズームレンズは、
変倍比が約３で全変倍域にわたって光学性能の良好なレ
ンズ系である。In response, the present applicant has developed a four-group zoom lens described in Japanese Patent Application Laid-Open No. 63-43115 with the intention of improving the zoom ratio and optical performance. In addition, our zoom lens proposed the lens system described in Japanese Patent Application Laid-Open No. 153511/1983 as a simplified version of the zoom lens mechanism.
It is a lens system with a variable power ratio of approximately 3 and excellent optical performance over the entire variable power range.
本発明は光学設計上非常な困難性を伴う高変倍率化を意
図し、パースペクティブの変化をさらに作画意図に生か
して実用上の要望を満足するために更に変倍域を拡張し
たレンズ系で一層の小型化を図るものである。The present invention aims to achieve a high variable magnification ratio, which is extremely difficult in terms of optical design, and further utilizes changes in perspective for the purpose of drawing, and in order to satisfy practical demands, the lens system further expands the variable magnification range. The aim is to downsize the
したがって本発明の目的は、包括画角が７６°〜１８°
程度で変倍比が３〜４程度の光学性能が全変倍域にわた
って良好な３群ズーム方式のコンパクトな高変倍率ズー
ムレンズを提供することにある。Therefore, the object of the present invention is to achieve a comprehensive angle of view of 76° to 18°.
It is an object of the present invention to provide a compact, high-power zoom lens of a three-group zoom system, which has good optical performance over the entire zoom range with a zoom ratio of about 3 to 4.
［問題点を解決するための手段］
本発明のズームレンズは、基本的には前記の特開昭６３
−１５３５１１号のレンズ系を発展させることを出発点
とし更に鏡枠構造の簡単化とフす−カシング方式の最適
化によるコンパクト化を考慮して３群ズーム方式のレン
ズ系としてその目的を達成した。[Means for solving the problems] The zoom lens of the present invention is basically based on the above-mentioned Japanese Patent Laid-Open No. 63
- Starting from the development of the lens system of No. 153511, we achieved the objective as a 3-group zoom lens system by simplifying the lens frame structure and optimizing the lens system. .
またレンズ構成およびズーミング時のレンズ群の挙動は
１本来はズーミング時の倍率負担と収差補正特に像面わ
ん曲の補正の点から又レンズ系の小型化を目的として、
物体側から順に正、負。In addition, the lens configuration and the behavior of the lens group during zooming were originally designed from the viewpoint of magnification burden during zooming, aberration correction, especially correction of field curvature, and for the purpose of downsizing the lens system.
Positive and negative in order from the object side.
正、負の屈折力を有するレンズ構成を基本の屈折力配分
にしている。この４群ズーム方式をズーム方程式の一般
解とする時、第２レンズ群と第３レンズ群がほぼ同一の
ズーミング移動をしながら、しかも光学性能を良好にし
得ることを見出したものである。つまり４群ズーム方式
の中の特殊解としての３群ズーム方式を見出した。The basic refractive power distribution is a lens configuration with positive and negative refractive powers. It has been found that when this four-group zoom system is used as a general solution to the zoom equation, the second and third lens groups can perform almost the same zooming movement while still achieving good optical performance. In other words, we have discovered a 3-group zoom system as a special solution among the 4-group zoom systems.
本発明のズームレンズは、上記のように４群ズーム方式
のレンズ系における負の屈折力の第２レンズ群と正の屈
折力の第３レンズ群を全体として正の屈折力を有する一
つのレンズ群としこれを第２レンズ群としたものである
。このようにして３群ズーム方式として変倍比が３〜４
程度を達成するためには各レンズ群の屈折力配置を適切
にすることがレンズ系を小型にする上で重要であり、更
に最適な厚肉レンズの構成や新素材の使用等によって一
層効果をあげることが出来る。In the zoom lens of the present invention, as described above, the second lens group having a negative refractive power and the third lens group having a positive refractive power in a four-group zoom lens system are combined into one lens having a positive refractive power. This lens group is used as a second lens group. In this way, the magnification ratio is 3 to 4 as a 3-group zoom system.
In order to achieve this level, it is important to appropriately arrange the refractive power of each lens group in order to make the lens system compact, and furthermore, the effect can be further improved by optimizing the configuration of thick lenses and using new materials. I can give it to you.
本発明のズームレンズは、以上の考えにもとづくもので
、物体側より順に正の屈折力の第１レンズ群と、正の屈
折力の第２レンズ群と、負のレンズ群の第３レンズ群と
より構成され、各レンズ群間の間隔を変化させて変倍を
行なうものである。The zoom lens of the present invention is based on the above idea, and includes, in order from the object side, a first lens group with a positive refractive power, a second lens group with a positive refractive power, and a third lens group with a negative lens group. The zoom lens is configured with the following, and magnification is changed by changing the distance between each lens group.
又次の条件（１） 、 ＋２１ 、 ＋３）を満足する
ことを特徴とする。It is also characterized by satisfying the following conditions (1), +21, +3).
（１）０．０５＜Ｆｌ／ＦＷ ＜０．９（２）１．０
＜ｌＦ＋ａｗ／Ｆｗ ＜２．０（３１２，０＜βｉｔ
＜５．０
ただし、Ｆ＋は第１レンズ群の屈折力、ｒ１□、は広角
端における第１レンズ群と第２レンズ群の合成屈折力、
ρＷは広角端における全系の屈折力、β３□は望遠端に
おける第３レンズ群の横倍率である。(1) 0.05<Fl/FW<0.9 (2) 1.0
<lF+aw/Fw <2.0(312,0<βit
<5.0 However, F+ is the refractive power of the first lens group, r1□ is the combined refractive power of the first lens group and the second lens group at the wide-angle end,
ρW is the refractive power of the entire system at the wide-angle end, and β3□ is the lateral magnification of the third lens group at the telephoto end.
本発明のズームレンズは、以上述べたような構成を特徴
とするものであるが、次のようにしてレンズ系の全長並
びに外径を小にしてコンパクトな構成とし更に高変倍率
化を達成するようにしている。The zoom lens of the present invention is characterized by the above-described configuration, but the overall length and outer diameter of the lens system are reduced in the following manner to achieve a compact configuration and a high variable magnification. That's what I do.
本発明は、前述の通り、第３８図に示すような４群ズー
ム方式のレンズ系の解析を行なって、レンズ系のコンパ
クト化のみならず、機構、構造上の検討を行なった結果
にもとづいて、第３レンズ群の広角端から望遠端へのズ
ーミング時に負担する変倍率が比較的小さい解が存在す
ること、そしてその時のこの第３レンズ群の役割は変倍
よりもむしろ像面わん曲の補正を担っている等の光学性
能の改善にあることがわかった。As mentioned above, the present invention is based on the results of analyzing a four-group zoom lens system as shown in FIG. 38, and not only making the lens system more compact, but also examining its mechanism and structure. , there is a solution in which the magnification ratio that the third lens group bears when zooming from the wide-angle end to the telephoto end is relatively small, and the role of this third lens group at that time is to control the field curvature rather than to change the magnification. It turns out that this is due to improvements in optical performance, such as being responsible for correction.
このようにして４群ズームのうちの第２レンズ群と第３
レンズ群を適宜な光軸上間隔を隔てた一つのレンズ群と
することが可能となった。In this way, the second and third lens groups of the four zoom groups
It has become possible to form the lens group into one lens group separated by an appropriate distance on the optical axis.
一方、第３レンズ群が有していた像面わん曲のＩ工作用
は、３群ズームレンズにおいては、光軸上間隔の調整即
ち望遠側のレンズ構成に望遠比の余裕を与えることや、
各レンズを構成する厚肉レンズの中に凸のメニスカス形
状の空気レンズを設けて高次の収差を発生させることに
よって得るようにした。On the other hand, in order to modify the curvature of field that the third lens group had, in a three-group zoom lens, it is necessary to adjust the spacing on the optical axis, that is, to give the lens configuration on the telephoto side a margin for the telephoto ratio.
This is achieved by providing a convex meniscus-shaped air lens among the thick lenses constituting each lens to generate high-order aberrations.
上記のようにして構成した３群ズーム方式のレンズ系は
、第４図に示すように広角端において第ルンズ群Ｇ、と
第２レンズ群Ｇ２とでその合成の屈折力が正の一つのレ
ンズ群と考えることが出来る。そしてそれに続く負の屈
折力の第３レンズ群Ｇ、とていわゆる望遠タイプを構成
している。As shown in FIG. 4, the three-group zoom lens system configured as described above consists of the first lens group G and the second lens group G2 at the wide-angle end, and their combined refractive power is one lens with a positive refractive power. It can be thought of as a group. The third lens group G having a negative refractive power following this lens constitutes a so-called telephoto type.
このように広角端における屈折力配置は、基本的には望
遠タイプであり、バックフォーカスの短い広角端を構成
する上では最適である。一方広角端では、焦点距離が短
いので後側主平面位置がレンズ系の比較的後に来るよう
な屈折力配置が可能である。つまりコンパクトでしかも
性能が良好な近軸配置になし得る。In this way, the refractive power arrangement at the wide-angle end is basically a telephoto type, which is optimal for configuring the wide-angle end with a short back focus. On the other hand, at the wide-angle end, since the focal length is short, it is possible to arrange the refractive power so that the rear principal plane is located relatively behind the lens system. In other words, a compact paraxial arrangement with good performance can be achieved.
以上の理由から設けたのが条件（１）および条件（２）
である。Conditions (1) and (2) were established for the above reasons.
It is.
条件（１１は、第１レンズ群の屈折力を規定する条件で
ある。第１レンズ群は基本的には広角端でのレンズ系全
長よりも、望遠端での望遠比と全変へ
倍域での収差補正状況の影響力や、さらにはフォ△
一カシング方式についての考慮をする必要がある。つま
り高変倍率を達成しながらコンパクトで良好な光学性能
を得る上で重要な要因を決定する条件がこの条件（１）
である。Condition (11 is a condition that defines the refractive power of the first lens group.Basically, the first lens group has a magnification range that varies from the total length of the lens system at the wide-angle end to the telephoto ratio and total change at the telephoto end. It is necessary to consider the influence of the aberration correction situation and the focusing method.In other words, it is necessary to determine the important factors in obtaining compact and good optical performance while achieving a high magnification ratio. This condition is (1)
It is.
ここで第４図に示すような３群ズームレンズで、広角端
における屈折力をψ１、レンズ系の全長をり、ヒすると
次の式が成立する。Here, in a three-group zoom lens as shown in FIG. 4, if the refractive power at the wide-angle end is ψ1, and the total length of the lens system is ψ, then the following equation holds true.
Ｆｗ” Ｆ＋ １１−ｅｚｗ−Ｆｉ）＋ （１−ｅ＋１
Ｆ＋ｌ （Ｆｉ＋Ｆｓ−ｅ’ ａｗｌ”ｉＦｓｌ（ｉＬ
Ｌｗ ＝ｅ＋ｗ＋ｅｘｗ＋ｆｆ、’ｗ
（ｔｉ）１１ ’ｙ：（−Ｆｌｅａｗ÷（１
−ｅ＋ｗ−１”＋ｌ （１−ｅｚｗ・Ｆｉｌ ）／Ｆｗ
’（組ただし、ｒｌ、ψ２．ψ３は夫々第ルンズ群
Ｇ１．第２レンズ群Ｇ２．第３レンズ群Ｇ、の屈折力、
ｅ４は広角端における第ルンズ群Ｇ、と第２レンズ群Ｇ
２の主点間隔、ｅ＋ｔは望遠端における第ルンズ群Ｇ１
と第２レンズ群Ｇ２の主点間隔、０２ｗは広角端におけ
る第２レンズ群Ｇ！と第３レンズ群Ｇ３の主点間隔、ｅ
ｔｒは望遠端における第２レンズ群Ｇ２と第３レンズ群
Ｇ、の主点間隔、β゛１は広角端におけるバックフォー
カス、β°Ｔは望遠端におけるバックフォーカスである
。Fw” F+ 11-ezw-Fi)+ (1-e+1
F+l (Fi+Fs-e'awl"iFsl(iL Lw =e+w+exw+ff,'w
(ti)11'y: (-Fleaw÷(1
-e+w-1”+l (1-ezw・Fil)/Fw
'(where rl, ψ2, ψ3 are the refractive powers of the lens group G1, the second lens group G2, and the third lens group G, respectively;
e4 is the first lens group G and the second lens group G at the wide-angle end.
2 principal point interval, e+t is the distance between the lens groups G1 at the telephoto end.
and the principal point interval of the second lens group G2, 02w is the second lens group G! at the wide-angle end. and the principal point interval of the third lens group G3, e
tr is the distance between the principal points of the second lens group G2 and the third lens group G at the telephoto end, β'1 is the back focus at the wide-angle end, and β°T is the back focus at the telephoto end.
これらの近軸関係式かられかるように、本発明のように
広角端でレンズ系の全長が最も短くなることが明らかな
場合には、広角端にのみ注目すればよい、したがって望
遠端における全長については、屈折力配置に基くズーミ
ング移動軌跡と移動量を考慮して厚肉構成を割当てるこ
とになる。As can be seen from these paraxial relational expressions, when it is clear that the total length of the lens system is shortest at the wide-angle end, as in the present invention, it is only necessary to pay attention to the wide-angle end; therefore, the total length at the telephoto end For this, a thick wall configuration will be assigned in consideration of the zooming movement locus and movement amount based on the refractive power arrangement.
条件（１１の上限を越えると、仕様として定まる広角端
の焦点距離が一定であるので、第１レンズ群の屈折力が
強くなりズーミング時の移動量が少なくなるためレンズ
系全体が小型になるので好ましい。しかし本発明は、高
変倍率化を主たる目的にしているので、望遠側は必然的
に画角が２４°程度を越える望遠域に入るため色収差が
発生し、像面の平坦性も維持出来なくなる。そのため第
１レンズ群の厚肉レンズの構成に留意して本発明の目的
を達成することも考えられるが、その場合レンズ枚数が
増加し又レンズの肉厚が大になり好ましくない。If the upper limit of condition 11 is exceeded, the focal length at the wide-angle end determined by the specifications is constant, so the refractive power of the first lens group becomes stronger and the amount of movement during zooming becomes smaller, making the entire lens system smaller. However, since the main purpose of the present invention is to increase the magnification ratio, the angle of view on the telephoto side inevitably falls into the telephoto range exceeding about 24°, which causes chromatic aberration and maintains the flatness of the image plane. Therefore, it is possible to achieve the object of the present invention by paying attention to the structure of the thick lenses in the first lens group, but in this case, the number of lenses increases and the thickness of the lenses becomes large, which is not preferable.
条件（１）の下限を越えると、第１レンズ群の屈折力が
弱くなるので、広角端から望遠端までのズーミング移動
量が大になりレンズ系の全長が大になる。そのため収差
補正上は有利だが、本発明の目的であるコンパクト化に
反することになる。If the lower limit of condition (1) is exceeded, the refractive power of the first lens group becomes weak, so the amount of zooming movement from the wide-angle end to the telephoto end becomes large, and the total length of the lens system increases. Although this is advantageous in terms of aberration correction, it goes against the objective of the present invention, which is compactness.
このように条件（１）は、変倍比が３〜４の本発明ズー
ムレンズにおいての光学性能とレンズ系の全長との均衡
のとれる屈折力配置を決定する上で重要な条件である。As described above, condition (1) is an important condition in determining the refractive power arrangement that balances the optical performance and the total length of the lens system in the zoom lens of the present invention having a variable power ratio of 3 to 4.
条件（２）は、広角端における第ルンズＰ１Ｇ、と第２
レンズ群Ｇ２の合成屈折力を規定したものである。そし
てこの正の合成系と負の第３レンズ群とでいわゆる望遠
タイプを構成し、これによって全系のコンパクト化を達
成するためのものである。Condition (2) is the second lens P1G at the wide-angle end, and the second lens P1G at the wide-angle end.
This defines the composite refractive power of the lens group G2. This positive composite system and the negative third lens group form a so-called telephoto type lens, thereby making the entire system more compact.
第３レンズ群の近軸的バックフォーカスを設定した時に
、その横倍率を設定すると第３レンズ群の屈折力が決ま
る。即ち変倍率が与えられた時は条件（２）によりほぼ
屈折力配置が定まり、全系の近軸的な配置を設定するこ
とが出来る。When the paraxial back focus of the third lens group is set, the refractive power of the third lens group is determined by setting its lateral magnification. That is, when a variable magnification is given, the refractive power arrangement is almost determined by condition (2), and a paraxial arrangement of the entire system can be set.
条件（２）の上限を越えると、広角端におけるレンズ系
の全長を短くする上では効果的であり、望遠端までのズ
ーミング時の移動量も比較的少なくてすむ。しかし第ル
ンズ群Ｇ、と第２レンズ群Ｇ２の屈折力が共に強くなる
傾向となり、像面わん曲の補正をはじめとして各収差の
バランスをとることが困難になり、最終的には撮影レン
ズの性能。Exceeding the upper limit of condition (2) is effective in shortening the total length of the lens system at the wide-angle end, and the amount of movement during zooming to the telephoto end can be relatively small. However, the refractive powers of both the lens group G and the second lens group G2 tend to become stronger, making it difficult to balance various aberrations including correction of field curvature, and ultimately Performance.
品質上での偏芯による感度が高くなるため好ましくない
。This is not preferable because the sensitivity due to eccentricity increases in terms of quality.
条件（２）の下限を越えると収差補正上は有利であるが
、広角端におけるレンズ系の全長を短くすることか困難
となるばかりでなく、後続する第３レンズ群Ｇ３の屈折
力が弱くなるので収差補正上のバランスをとることが必
要になり、後側主平面位置が第３レンズ群の厚肉レンズ
系中に入り込むためレンズ系のパックフォーカスが短く
なる。そのためレンズ径も大になり本発明の目的に反す
ることになる。Exceeding the lower limit of condition (2) is advantageous in terms of aberration correction, but not only does it become difficult to shorten the total length of the lens system at the wide-angle end, but the refractive power of the subsequent third lens group G3 becomes weaker. Therefore, it is necessary to balance the aberration correction, and since the position of the rear principal plane enters the thick lens system of the third lens group, the pack focus of the lens system becomes short. Therefore, the lens diameter becomes large, which is contrary to the purpose of the present invention.
以上述べた条件ｆｌ＋、（２１を満足すると本発明のレ
ンズ系の基本的な骨組になる第１レンズ群と第２レンズ
群の屈折力配置が設定される。When the above-mentioned conditions fl+, (21) are satisfied, the refractive power arrangement of the first lens group and the second lens group, which forms the basic framework of the lens system of the present invention, is set.
更に第３レンズ群の屈折力の配分が定まれば本発明のレ
ンズ系の近軸的なレイアウトが決定されることになる。Furthermore, once the refractive power distribution of the third lens group is determined, the paraxial layout of the lens system of the present invention is determined.
この第３レンズ群の屈折力配分を定めるためには、広角
端から望遠端へのズーミングの時の倍率負担が重要であ
る。これと近軸的バックフォーカスとの兼ね合いで全系
の屈折力配置を決定し得る。In order to determine the refractive power distribution of this third lens group, the magnification load during zooming from the wide-angle end to the telephoto end is important. The refractive power arrangement of the entire system can be determined by balancing this with the paraxial back focus.
ここで広角端でのコンパクト化と高倍率化とを考えた時
、第３レンズ群の負担する近軸横倍率が重要な意味を持
ち、良好な性能を得る上でも大きな意味を持つ。即ち第
３レンズ群の負担する近軸横倍（以下倍率と言う）を規
定したのが条件（３）である。When considering compactness and high magnification at the wide-angle end, the paraxial lateral magnification borne by the third lens group has an important meaning, and also has a great meaning in obtaining good performance. That is, condition (3) defines the paraxial lateral magnification (hereinafter referred to as magnification) that is borne by the third lens group.
第３レンズ群の倍率は、広角端から望遠端までの変倍率
に直接結びついており、またズーミング時の第３レンズ
群の移動量自体にも関係している。したがって、同じ変
倍率を得ようとする時、第３レンズ群の担う倍率の与え
方で第２レンズ群の担う倍率も変化し、ズーミング時の
移動軌跡も変化し、収差補正の状況も変化する。The magnification of the third lens group is directly related to the variable magnification from the wide-angle end to the telephoto end, and is also related to the amount of movement of the third lens group itself during zooming. Therefore, when trying to obtain the same magnification, the magnification performed by the second lens group changes depending on how the magnification is given to the third lens group, the movement trajectory during zooming changes, and the situation of aberration correction also changes. .
即ち条件（１１、（２＋によって基本的な屈折力配置が
決まり、条件（３）で変倍率を設定すべき望遠端におけ
る第３レンズ群の倍率を与えることによって基本的な近
軸的レイアウトがほぼ決定される。In other words, the basic refractive power arrangement is determined by conditions (11 and (2+), and the basic paraxial layout is approximately It is determined.
更に各レンズ群の厚肉構成を割り当てることによって、
良好な結像性能と所望の変倍率とレンズ系の小型化を達
成するように繰返し近軸構成を見回して目的が実現され
る。Furthermore, by assigning a thick wall configuration to each lens group,
The objective is realized by repeatedly looking around the paraxial configuration to achieve good imaging performance, the desired magnification, and compactness of the lens system.
条件（３）の上限を越えると第３レンズ群の持つ倍率が
高くなり、高変倍率を得るためには好ましいが、第３レ
ンズ群のズーミング時の移動量が大きくなる。また厚肉
レンズ構成を少ないレンズで達成しようとすることと、
性能上からレンズ群の移動量を大にして望遠比をかせぐ
ことからは１条件（３）の上限を越えることは好ましく
ない。又レンズ鏡枠および駆動機構が複雑になりコスト
高になる。また下限を越えると、高変倍率にするために
は、第２レンズ群の負担する倍率が高（なり、広角端か
ら望遠端までのレンズ系の全長の変化が比較的少なくコ
ンパクトになし得るが収差補正が困難になる。そのため
良好に収差補正を行なうためには、屈折率分布型レンズ
を併用しなければならなくなる。このように収差補正が
困難なことから実際上は高変倍にすることがむずかしく
、変倍率が２程度となりそれ以上は困難になる。If the upper limit of condition (3) is exceeded, the magnification of the third lens group will increase, which is preferable for obtaining a high variable magnification, but the amount of movement of the third lens group during zooming will increase. Also, trying to achieve a thick lens configuration with fewer lenses,
From the standpoint of performance, in order to increase the telephoto ratio by increasing the amount of movement of the lens group, it is not preferable to exceed the upper limit of Condition 1 (3). Furthermore, the lens barrel and drive mechanism become complicated, resulting in high costs. If the lower limit is exceeded, the second lens group will have to bear a high magnification in order to achieve a high variable magnification, and the change in the overall length of the lens system from the wide-angle end to the telephoto end will be relatively small, making it possible to make it compact. It becomes difficult to correct aberrations. Therefore, in order to properly correct aberrations, a gradient index lens must be used in conjunction with the lens. In this way, it is difficult to correct aberrations, so in practice it is recommended to use a high zoom ratio. The magnification ratio is about 2, and it becomes difficult to increase the magnification.
本発明の高変倍率ズームレンズにおいて、特にその変倍
率を一層高くするためには、条件Ｔｌ）の条件を次の条
件（１°）の範囲に限定することが望ましい。In the high variable power zoom lens of the present invention, especially in order to further increase the variable power, it is desirable to limit the condition Tl) to the range of the following condition (1°).
（１’ｌ Ｏ，０５＜Ｆ＋／Ｆｗ ＜０．にれらの条
件は、第１レンズ群の屈折力を規定するもので、高変倍
率化を図るためには、第ルンズ群、第２レンズ群および
第３レンズ群の各々が広角端から望遠端への変倍の際に
独立して移動−するための自由度が大であることが好ま
しい。この自由度を多（与えるためには上記条件（ｌｏ
）の範囲に限定することが好ましい。(1'l O,05<F+/Fw<0. These conditions define the refractive power of the first lens group, and in order to achieve high magnification, it is necessary to It is preferable that each of the lens group and the third lens group have a large degree of freedom in order to move independently during zooming from the wide-angle end to the telephoto end. The above conditions (lo
) is preferable.
この条件（ｌｏ）の下限の範囲内であればレンズ系の全
長に関しては望遠端で余裕をもつことになり又光学性能
の面では、第１レンズ群をフォーカシング群として用い
ることを考えなければ極めて良好になし得て、高性能な
高変倍率ズームレンズが得られる。又上限値以下であれ
ばレンズ系の小型化特に望遠側で全長を短くなし得る屈
折力配分が出来る。そして第２レンズ群の屈折力の配分
と合わせて小型な高変倍率ズームレンズが得られる。If it is within the lower limit of this condition (lo), the total length of the lens system will have a margin at the telephoto end, and in terms of optical performance, it will be extremely difficult to achieve this unless you consider using the first lens group as a focusing group. A high-performance, high-variability zoom lens can be obtained. If the value is below the upper limit, it is possible to achieve a refractive power distribution that allows for miniaturization of the lens system, especially shortening the overall length on the telephoto side. In combination with the distribution of refractive power in the second lens group, a compact high-power zoom lens can be obtained.
更に条件（３）に関して次の条件（３°）のように限定
すれば変倍率を３〜４程度になし得る。Furthermore, if condition (3) is limited to the following condition (3 degrees), the magnification ratio can be set to about 3 to 4.
（３°１２．５＜βＳＴ ＜５．０
高度倍率化には、第３レンズ群の横倍率を適切に選ぶこ
とが、光学性能上も製造上も重要になる。条件（３°）
の下限をこえると上記のように一層高変倍率にすること
が容易でなくなる。(3°12.5<βST<5.0 To achieve high magnification, it is important to appropriately select the lateral magnification of the third lens group from both optical performance and manufacturing perspectives. Condition (3°)
If the lower limit of is exceeded, it becomes difficult to increase the magnification as described above.
以上のような各条件によって各レンズ群の基本的な屈折
力配分を決定し得る。The basic refractive power distribution of each lens group can be determined by each of the above conditions.
次に実際の厚肉レンズの構成について述べる。Next, the structure of the actual thick lens will be described.
第１レンズ群は、前記の条件によってその屈折力は与え
られているが、そのレンズ構成は、基本的には正レンズ
と負レンズの接合レンズよりなっている。しかしこれに
更に正レンズを追加してもよい。又接合レンズを分離し
てその間にメニスカス状の空気レンズを形成することに
よって収差補正効果を増大させ得る。The first lens group has a refractive power given to it by the above-mentioned conditions, and its lens structure basically consists of a cemented lens of a positive lens and a negative lens. However, a positive lens may be added to this. Furthermore, the aberration correction effect can be increased by separating the cemented lens and forming a meniscus air lens therebetween.
第２レンズ群は、その役割から二つの群からなると考え
られ、負の前群Ｇｚｒと正の後群Ｇ２．Ｉとにて構成さ
れている。The second lens group is considered to consist of two groups due to its role: a negative front group Gzr and a positive rear group G2. It is composed of I.
第２レンズ群中の前群Ｇａｙは、第１レンズ群で発生す
る軸外収差のうち、後群Ｇ、のみでは補正困難な歪曲収
差の補正や像面わん曲の補正のために、第１レンズ群で
発生するこれら収差と反対符号の収差を発生させている
。又球面収差の補正に関しては、特にマージナル光束径
が大になる望遠域における色の球面収差の補正に重要な
役割を有している。The front group Gay in the second lens group is used to correct distortion and field curvature, which are difficult to correct with the rear group G alone, among the off-axis aberrations generated in the first lens group. Aberrations with the opposite sign to these aberrations occurring in the lens group are generated. Regarding the correction of spherical aberration, it plays an important role in correcting chromatic spherical aberration, especially in the telephoto range where the marginal beam diameter becomes large.
この前群Ｇ２ｒのレンズ構成は、物体側より正レンズと
負レンズを配置することを基本とするもので、要求され
る結像性能に応じて更に正レンズもしくは負レンズを配
置してもよい。この前群Ｇ。The lens configuration of the front group G2r is basically a positive lens and a negative lens arranged from the object side, and a positive lens or a negative lens may be further arranged depending on the required imaging performance. This front group G.
の正レンズもしくは負レンズを分割しその間に空気レン
ズを形成したり、前群ＧａＰ中のレンズに非球面を用い
ることにより一層性能を向上させることが可能である。The performance can be further improved by dividing the positive or negative lens and forming an air lens between them, or by using an aspherical surface for the lens in the front group GaP.
また第２レンズ群の後群Ｇ２．８は、前群Ｇ２Ｆと光軸
上の間隔りだけ隔てて配置され、基本的にはトリブレッ
トもしくはテツサータイプのように１枚の負レンズと２
枚の正レンズからなっている。ここで第１レンズ群と第
２レンズ群とで全体として結像系になっているので、こ
の後群Ｇ２Ｒは、いわゆるリレー系を構成していると考
えることも出来る。Also, the rear group G2.8 of the second lens group is arranged apart from the front group G2F by a distance on the optical axis, and basically consists of one negative lens and two lenses like a triplet or Tetsusar type.
It consists of positive lenses. Since the first lens group and the second lens group constitute an imaging system as a whole, the rear group G2R can also be considered to constitute a so-called relay system.
この後群（ＩＲは、望遠域でマージナル光束径が大にな
る位置にあり、球面収差の補正に大きく寄与せしめる必
要があり、又偏芯感度をはじめとして製造上の困難を伴
うことが少ないように各面での入射角もしくは出射角が
大きくならないように配慮する必要がある。The rear group (IR) is located at a position where the marginal beam diameter becomes large in the telephoto range, and it is necessary to make a large contribution to the correction of spherical aberration. It is necessary to take care to ensure that the incident angle or the outgoing angle on each surface does not become large.
本発明のズームレンズにおいて、−層の小型化を実現す
るためには、第２レンズ群Ｇ２の前群Ｇ１１Ｆと後群Ｇ
！Ｒの主点間隔ｅ′２の値をある範囲内に設定し、この
近軸構成を満足するように厚肉レンズを割り当てること
によってデッドスペースを少なくすることが必要である
。In the zoom lens of the present invention, in order to achieve miniaturization of the - layer, the front group G11F of the second lens group G2 and the rear group G
! It is necessary to reduce the dead space by setting the value of the principal point spacing e'2 of R within a certain range and allocating thick lenses so as to satisfy this paraxial configuration.
又レンズ系を小型化することによって第２レンズ群Ｇ２
の前群Ｇ２Ｆ又は後群Ｇ１１ｆｌのいずれかの屈折力が
強くなり性能劣化に結びつくことがある。その場合非球
面や屈折率分布型レンズを用いることが有効である。Also, by downsizing the lens system, the second lens group G2
The refractive power of either the front group G2F or the rear group G11fl may become strong, leading to performance deterioration. In that case, it is effective to use an aspherical surface or a gradient index lens.
本発明のズームレンズの第２レンズ群は、負の屈折力の
前群Ｇ２Ｆと正の屈折力の後群Ｇ２Ｒにて構。The second lens group of the zoom lens of the present invention includes a front group G2F with negative refractive power and a rear group G2R with positive refractive power.
成され１例えば後に示す実施例１〜７のように開口絞り
の前後の軸上空気間隔を設けてレンズ系全長に余裕をも
たせ、高画質をねらったり、ビームスプリッタ−等を設
けて受光素子やファイター光学系等に光路を分岐させる
こと等を考慮しなければ、より小型のレンズ系になし得
る。つまりこれによって後に示す実施例８〜１１のよう
に一層小型になし得る。For example, as in Examples 1 to 7 shown later, an axial air gap is provided before and after the aperture diaphragm to provide a margin for the overall length of the lens system, aiming at high image quality, or a beam splitter is installed to increase the light receiving element. If branching of the optical path to a fighter optical system or the like is not considered, a smaller lens system can be achieved. In other words, this allows the device to be made even smaller as in Examples 8 to 11 shown later.
このようにして小型化を実現するためには、第２レンズ
群Ｇ２中の前群０２ Ｆの屈折力Ｆ２Ｆと前群Ｇ２Ｆと
後群Ｇ２＋１の二つのレンズ群の主点間隔１２等を適切
に選択すればよい、ここで第２レンズ群Ｇ２の屈折力ｒ
２は、前記の条件（２）によって一定の範囲内に規定さ
れている。In order to achieve miniaturization in this way, the refractive power F2F of the front group 02F in the second lens group G2 and the principal point spacing 12 of the two lens groups, the front group G2F and the rear group G2+1, must be adjusted appropriately. Here, the refractive power r of the second lens group G2
2 is defined within a certain range by the above condition (2).
又第２レンズ群Ｇ２の後群Ｇ２Ｒの屈折力ｐｉｌＩは次
の式にもとづいて規定される。Further, the refractive power pilI of the rear group G2R of the second lens group G2 is defined based on the following equation.
ＦＩＲ＝ （Ｆｚ−１”ｚｒｌ／ （１−Ｆｚｐ・ｅ’
ａｌこの第２レンズ群Ｇ、自体の屈折力配置は、いわゆ
るレトロフォーカスタイプとみることが出来る。つまり
正の屈折力の後群Ｇ２１１の前に負の屈折力の前群Ｃ＋
２ｒを配置することによって第２レンズ群Ｇ２からの結
像点位置な長（する働きをしている。そして第３レンズ
群に対する物点位置を長くし、収差補正上゛は有利な配
置にしである。FIR= (Fz-1"zrl/ (1-Fzp・e'
The refractive power arrangement of the second lens group G itself can be considered to be of a so-called retrofocus type. In other words, in front of the rear group G211 with positive refractive power, there is a front group C+ with negative refractive power.
By arranging lens 2r, the position of the image forming point from the second lens group G2 is lengthened.The position of the object point relative to the third lens group is lengthened, making the arrangement advantageous in terms of aberration correction. be.
ここで前群Ｇ２Ｆと後群Ｇ２Ｒの主点間隔 １２を短（
すると共に前群Ｇ２Ｆの屈折力Ｙ’２１を強めることに
よって、前群Ｇ２．の実質的な口径比が大になることに
なり、主として望遠端での球面収差の補正にはいくぶん
不利になるが、軸外収差の補正にはそれ程不利ではない
。Here, shorten the principal point distance 12 between the front group G2F and the rear group G2R (
At the same time, by increasing the refractive power Y'21 of the front group G2F, the front group G2. This increases the effective aperture ratio, which is somewhat disadvantageous for correcting spherical aberrations mainly at the telephoto end, but it is not so disadvantageous for correcting off-axis aberrations.
更にレンズ系の全長が短くなるので、一般に外径が大き
くなりやすいが、第ルンズ群の入射瞳距離が短（なるの
で小型化は達成出来、全体としては小型になる。Furthermore, since the overall length of the lens system is shortened, the outer diameter generally tends to become large, but the entrance pupil distance of the lens group is short, so miniaturization can be achieved, and the overall size is small.
以上のことから一層の小型化を達成するためには、主点
間隔ｅ′２を次の範囲内に選ぶことが望ましい。From the above, in order to achieve further miniaturization, it is desirable to select the principal point spacing e'2 within the following range.
５ ＜ ｅ’２ ＜ ２０
この条件は、広角端での全長と、レンズ外径を小さくす
ることによってレンズ系全体の小型化を達成するもので
ある。5 <e'2< 20 This condition achieves miniaturization of the entire lens system by reducing the overall length at the wide-angle end and the outer diameter of the lens.
この条件の上限を越えると光学性能上にとっては好まし
いが、全長かい（ぶん長くなる。又下限を越えると前群
Ｇ２Ｆと後群Ｇ２Ｆｌが干渉するので好ましくない。If the upper limit of this condition is exceeded, it is preferable in terms of optical performance, but the overall length becomes considerably longer.If the lower limit is exceeded, the front group G2F and the rear group G2Fl will interfere with each other, which is not preferable.
第３レンズ群は、負の屈折力を有しており、いわゆる望
遠クイブのレンズ系における負の屈折力の後群とみなす
ことが出来る。広角端においては、後側主平面の位置が
像面に比較的近いために光学系全体としては本来の望遠
タイプのように主平面位置がレンズ系の前方に位置する
ようにはならない。しかしながら望遠端に近づ（につれ
て望遠タイプの特徴が顕著になって来る。この第３レン
ズ群は、条件（３）の説明で述べたように、望遠側で大
きな横倍率を持つリアーコンバージョンとしての作用を
有すると考えると、像面位置での縦方向での効きが縦倍
率として作用するので、これを活用すると同時に十分に
制御することが重要である。The third lens group has negative refractive power and can be regarded as a rear group with negative refractive power in a so-called telephoto quib lens system. At the wide-angle end, since the position of the rear principal plane is relatively close to the image plane, the principal plane of the optical system as a whole is not located in front of the lens system as in the original telephoto type. However, as you get closer to the telephoto end, the characteristics of the telephoto type become more noticeable.As mentioned in the explanation of condition (3), this third lens group is used as a rear conversion with a large lateral magnification on the telephoto end. Considering that it has an effect, the effect in the vertical direction at the image plane position acts as a vertical magnification, so it is important to utilize this and at the same time sufficiently control it.
本発明のレンズ系では、この第３レンズ群によって広角
端でのバックフォーカスを短く構成し得るので、逆にバ
ックフォーカスが極端に短くなることもあり得る。その
ため第３レンズ群の後側主平面位置があまり物体側に入
らないように留意する必要がある。そのためにこの第３
レンズ群は、正レンズおよび負レンズにて構成すること
を基本にしている。これを負レンズ１枚のみで構成する
ことも可能であるが、その屈折力を弱くしないと結像性
能が十分良好になし得ない。しかしその屈折力を弱くす
るとズーミング時の移動量が大になり好ましくない。In the lens system of the present invention, the back focus at the wide-angle end can be shortened by the third lens group, so the back focus may become extremely short. Therefore, care must be taken to ensure that the position of the rear principal plane of the third lens group is not too close to the object side. For that reason, this third
The lens group is basically composed of a positive lens and a negative lens. It is possible to configure this with only one negative lens, but unless its refractive power is weakened, the imaging performance will not be sufficiently good. However, if the refractive power is weakened, the amount of movement during zooming becomes large, which is not preferable.
以上のように構成することによって、本発明の目的であ
る高変倍率で小型なズームレンズを構成し得る。By configuring as described above, it is possible to configure a compact zoom lens with a high zoom ratio, which is the object of the present invention.
［実施例］
次に本発明のコンパクトな高変倍率ズームレンズの各実
施例を示す。[Examples] Next, examples of the compact high-power zoom lens of the present invention will be shown.
実施例１
ｆ＝３６．０〜１０２．５１
２ω＝６２°〜２３．８３゜
ｒ、 ＝ −１６６，４０７５
ｄ、＝ １．８５００
ｒｚ＝６２．２５５２
ｄ２＝ １．６８４５
ｒｓ＝５５．０４９１
ｄ＝＝ ３．９５００
ｒ４： −２２０，３１２２
ｄ４＝ ｏ、 ２０００
ｒｓ ＝ ４５．８６４６
ｄ、＝ ４．２５００
ｒ６＝ １６４．３３７０
ｄａ＝Ｄ＋（可変）
ｒｙ＝−１０４，０８２６
ｄ、＝ １．６２００
ｒ、＝ １８．９４３３
ｄ、＝ １．３０８０
ｊ９＝ ２１．７９１６
ｎｚ＝１．４９７００
ｎ＋＝１．８５０２６
ｎｓ＝１．６１７００
ｎ４＝ １．８３４８１
Ｆ／４．５ 〜Ｆ７６、９
ν、 ＝３２．２８
ν、 ＝８１．６１
ν、 ＝６２．７９
ν４ ＝４２．７２
ｄ、＝３．６５００ Ｑ５： １．８０５１８ｒ
、。 ＝ −５６，３４４６
ｄ＋ａ ＝１．５０００
ｒｔｌ ＝−２６，４５８７（非球面）ｄ、 、 ＝
１．８５００ ’ｎａ−１，７４４０゜ｒｔｌ ＝−
４５，７１９０
ｄ１□ ＝ ４．８５００
ｒ、、＝ｏｏ（絞り）
ｄ、、 ＝２．１５００
ｒ、４ ＝ １１５．６１１０
ｄ、、 ＝ ２．７５００ ｎｔ” １．７７２
５０ｒ＋ｓ ＝−３５，８４００
ｄ、、 ＝０．３０００
ｒ、、 ＝−１０３，９１５２
ｄ、、 ＝ ３．３０００ ｎａ” １．４９７
０゜ｒ＋ｙ ＝−１９，６７６９
ｄ、、 ＝ｏ、７ｓｏ。Example 1 f=36.0~102.51 2ω=62°~23.83°r, = -166,4075 d, = 1.8500 rz=62.2552 d2= 1.6845 rs=55.0491 d == 3.9500 r4: -220,3122 d4= o, 2000 rs = 45.8646 d, = 4.2500 r6= 164.3370 da=D+ (variable) ry=-104,0826 d, = 1.6200 r, = 18.9433 d, = 1.3080 j9 = 21.7916 nz = 1.49700 n+ = 1.85026 ns = 1.61700 n4 = 1.83481 F/4.5 ~F76,9 ν, = 32 .28 ν, =81.61 ν, =62.79 ν4 =42.72 d, =3.6500 Q5: 1.80518r
,. = -56,3446 d+a =1.5000 rtl = -26,4587 (aspherical surface) d, , =
1.8500'na-1,7440゜rtl =-
45,7190 d1□ = 4.8500 r,, =oo (aperture) d,, =2.1500 r, 4 = 115.6110 d,, = 2.7500 nt" 1.772
50r+s =-35,8400 d,, =0.3000 r,, =-103,9152 d,, = 3.3000 na" 1.497
0°r+y =-19,6769 d,, =o, 7so.
ｒ＋ｓ ＝−１６，９９７５（非球面）ｄ＋ａ ＝１
．７５０Ｏｎ、＝１．８０５１８ｒ＋＊ ＝ １６３
．２３５２
νも
ν６
ν丁
＝ ２５．４３
＝ ４４．７３
＝ ４９．６６
シ、 ＝８１．６１
ν９
＝２５．４３
ｄ、、 ＝０−８５００
ｒａｏ ＝ ５５７．４１８９
ｄ２． ＝ ４．０００Ｏｎｅｏ ＝ １．６７７
９０ ν、、＝５５．３３ｒ、ｌ ＝−１９，４３
９９
ｄ２１ ＝ ｏ２（可変）
ｒ２□ ＝ ８５．７９７７
ｄ、□ ＝３．４０００ ｎ、、 ＝１．７８４
７２ シ、、＝２５．６８ｒｉａ ＝ −７４，６
４４０（非球面）ｄ、、 ＝０．２０００
ｒ２４ ＝−３５０，７６４９
ｄｚ４ ＝ １．１０００ ｎ＋ｚ ＝ １．８０
４００ １７１２＝ ４６．５７ｒｚｓ ＝ ３９．
５５４６
ｄ２ｓ ＝７．９８００
ｒｚａ ＝−１６，４０２７
ｄ、、 ＝ １．３０００ ｎ、、 ＝ １．
８０４００ ｖ、３＝４６．５７ｒ、、 ＝−４
４，４４１３
非球面係数
（第１１面）
Ａ、、＝−０，５６５６８ｘｌＯ−’ 、Ｂ、、＝０．
２３１０１ ｘｌＯ−’Ｃｚ＝−０．２０６９４ｘｌＯ
−” 、Ｄ、、＝０．１２８７１ ｘｌＧ−”（第１８
面）
Ａ＋ａ＝−０，レンズ２６Ｘ ｔｏ−’ 、 Ｂｔ
−＝０．４４９５１ Ｘ １０−’Ｃ，，＝−０．１
０６５４ｘ ｔｏ−’ 、Ｄ、、＝０．１２６１３
ｘ １０−”（第２３面）
Ａ２．＝−０，１０９２４ｘ １０−’ 、Ｂ２．＝
０．２０３１６ ｘ １０−’Ｃ２３＝ −０，８９
８３８Ｘ ｌロー１０、０２３＝−０，１９１１９Ｘ
１０−”ｆ ３６．０ ６２．５０
１０２．５１Ｄ、 ２．２８３ １６．７
８０ ２０．８５００、 １８．０００
７．５００ １．４５０！＋／Ｐ、＝ ０
．１１９ 、 Ｆ＋ｔｗ／’／’ｗ ＝ １．
１８６β３Ｔ ＝３．１８６ 、 ｅ’ｔ
＝２６．９１９実施例２
ｆ＝３６〜１０２．５１ 、 Ｆ／４．５〜Ｆ／
６．９２ω＝６２ａ〜２３．８３゜
ｒ 、 ＝ ５０２．５２９３
ｄ＋ ＝ １．８５００ ｎ１＝ １．８３４００
１７＋ ＝ ３７．１６ｒ２＝ ３７．９９４８
ｄａ＝１．００００
ｒ３＝ ３６．４５８６
ｄ３＝３．９５・ＯＯｎ２＝ １．４８７４９ ｖ
２＝、７０．２０ｒ４＝ ５０５．２３６４
ｄ、： ｏ、２０００
ｒ、＝ ３４．７９９５
ｄ、＝ ４．２５０Ｏｎ、” １．６１７０Ｏｒ、＝
８１．７６５４
ｄ、＝ｐ、（可変）
ｒ、＝ −１０８，８３５４
ｄ ？ ＝ １ 、６２００ ｎ ４＝ １ 、
８３４８１ｒ、＝ １８．９７５６
ｄｏ”１．３０８０
ｒ９＝２１．０８３１
ｄ−＝ ３．６５００ ｊ１５＝ １．８０５
１８ｒ、。 ＝−１２３，０２７０
ｄ、、 ＝１．５０００
ｒ＋＋ ＝−２４，７５３６（非球面）ｄｌｌ ＝ １
．８５００ ｊ１６＝ １．７４４０Ｏｒ＋２
＝−３８，２１６９
ｄ、、 ＝４．８５００
ｒ１３＝（資）（絞り）
ｄ１３ ＝２．１５００
ν３
ν４
ν５
シロ
＝ ６２．７９
＝４２．７２
＝２５．４３
＝４４．７３
ｒ、４ ＝７６．６５８８
ｄ、、 ＝ ２．７５００ ｆｉ、＝ １．７７
２５０ｒ＝５ ＝−３６，４１４９
ｄｏｓ ＝０．３０００
ｒｌａ ＝−１３７，５１０１
ｄ、、 ” ３．３００Ｏｎ、＝ １．４８７４９ｒ
＋７ ＝−２１゜０７００
ｄ、、 ＝０．７５００
ｒｌａ ＝： −１８，１８８３（非球面）ｄ、、
＝ １．７５００ １１９＝ １．８０５１８ｒ＋９
＝１８０．９６８６
ｄ、９ ＝０．８５００
ｒ２ｏ ＝４５８．６４３５
ｄｚ。 ＝ ４．００００ ｎ１ｏ ＝ １．６９
１００ｒ２ｔ ＝−２０，７１５５
ｄ２．＝０２（可変）
ｒ２□ ＝ ８０．７５６５
ｄ、、 ” ３．４００Ｏｎ、、 ＝ １．７８４
７Ｏｒ、、 ＝ −６８，６２６２（非球面）ｄ２−
＝０．２０００
＝ ４９．６６
＝ ７０．２０
＝ ２５．４３
シ、０＝５４．８４
、＝２６．３０
ｒｚ＜ ＝−１８９，９１１５
ｄｚ４ ＝ １．１０００ ｎ＋ｚ＝ １．８０３
００
シ、、＝４６．６６
ｒｚｓ ＝ ３５．７９８７
ｄ２５．＝ ７．９８００
ｒ２ｇ ＝−１６，６６７８
ｄ２６ ＝１．３０００ 口、３
ｒ２□ ＝ −３８，９５２９
非球面係数
（第１１面）
Ａ、＝ −０，７９６４５ｘ ｔｏ−５ＣＩ＋＝−０，
８８９６１Ｘ １０−”（第１８面）
Ａ＋ａ＝−０，１３８７３ｘ ＩＱ−’Ｃ＋ａ＝−０，
Ｉ２８３５Ｘ １０−”（第２３面）
Ａａ３＝−０，８４２１２Ｘ １Ｏ−５Ｂ２３＝Ｃ２３
＝ ０．３４１６０ Ｘ １０−’、 Ｄ２３＝ｆ
３６ ６２．５０
Ｄ、 ２．２８３ １６．７８０
Ｄ、 １８．０００ ？、５００Ｂ、、＝ ０
．２４９１４ ｘ １Ｏ−８Ｄ、、＝０．１６３７２
ｘ １０−’Ｂ、、＝−０，４８２０２ｘ １０−
’Ｄ＋ａ＝０．７５２９０ Ｘ １Ｏ−Ｉ２＝ １．
８０３００
シ１３＝４６．６６
０．１３３７４ Ｘ １０−７
−０．１２６１４Ｘ １０−’
１０２．５１
２０．８５０
１．４５０
乙ｚｗ／Ｙ’ｗ ＝ １．２０４
８’２ ＝２２．４８３
ｐＨ／Ｆｗ ＝０．ｌ１３ 。r+s = -16,9975 (aspherical surface) d+a = 1
．． 750On, = 1.80518r++ = 163
．． 2352 ν is also ν6 ν = 25.43 = 44.73 = 49.66 ci, = 81.61 ν9 = 25.43 d,, =0-8500 rao = 557.4189 d2. = 4.000 Oneo = 1.677
90 ν,,=55.33r,l=-19,43
99 d21 = o2 (variable) r2□ = 85.7977 d,□ =3.4000 n,, =1.784
72 shi,, =25.68ria = -74,6
440 (aspherical surface) d,, =0.2000 r24 = -350,7649 dz4 = 1.1000 n+z = 1.80
400 1712 = 46.57rzs = 39.
5546 d2s =7.9800 rza =-16,4027 d,, = 1.3000 n,, = 1.
80400 v, 3=46.57r,, =-4
4,4413 Aspheric coefficient (11th surface) A,, =-0,56568xlO-', B,, =0.
23101xlO-'Cz=-0.20694xlO
−”,D,,=0.12871 xlG−”(18th
surface) A+a=-0, lens 26X to-', Bt
-=0.44951 X 10-'C,,=-0.1
0654x to-' ,D,,=0.12613
x 10-” (23rd surface) A2.=-0,10924x 10-', B2.=
0.20316 x 10-'C23= -0,89
838X llow 10, 023=-0,19119X
10-”f 36.0 62.50
102.51D, 2.283 16.7
80 20.8500, 18.000
7.500 1.450! +/P, = 0
．． 119, F+tw/'/'w = 1.
186β3T = 3.186, e't
=26.919 Example 2 f=36~102.51, F/4.5~F/
6.92ω = 62a ~ 23.83゜r, = 502.5293 d+ = 1.8500 n1 = 1.83400
17+ = 37.16r2= 37.9948 da=1.0000 r3= 36.4586 d3=3.95・OOn2= 1.48749 v
2=, 70.20r4= 505.2364 d,: o, 2000 r, = 34.7995 d, = 4.250On," 1.6170Or,=
81.7654 d, = p, (variable) r, = -108,8354 d? = 1, 6200 n 4= 1,
83481r, = 18.9756 do”1.3080 r9=21.0831 d-= 3.6500 j15= 1.805
18r. =-123,0270 d,, =1.5000 r++ =-24,7536 (aspherical surface) dll = 1
．． 8500 j16= 1.7440Or+2
=-38,2169 d,, =4.8500 r13 = (capital) (aperture) d13 =2.1500 ν3 ν4 ν5 White = 62.79 =42.72 =25.43 =44.73 r,4 =76 .6588 d,, = 2.7500 fi, = 1.77
250r=5 =-36,4149 dos =0.3000 rla =-137,5101 d,, ” 3.300On, = 1.48749r
+7 = -21°0700 d,, =0.7500 rla =: -18,1883 (aspherical surface) d,,
= 1.7500 119= 1.80518r+9
=180.9686 d, 9 =0.8500 r2o =458.6435 dz. = 4.0000 n1o = 1.69
100r2t = -20,7155 d2. =02 (variable) r2□ = 80.7565 d,, ” 3.400On,, = 1.784
7Or,, = -68,6262 (aspherical surface) d2-
= 0.2000 = 49.66 = 70.20 = 25.43 shi, 0 = 54.84 , = 26.30 rz< = -189,9115 dz4 = 1.1000 n+z = 1.803
00 shi,, =46.66 rzs = 35.7987 d25. = 7.9800 r2g = -16,6678 d26 = 1.3000 mouth, 3 r2□ = -38,9529 Aspheric coefficient (11th surface) A, = -0,79645x to-5CI+=-0,
88961X 10-” (18th side) A+a=-0, 13873x IQ-'C+a=-0,
I2835X 10-” (23rd side) Aa3=-0,84212X 1O-5B23=C23
= 0.34160 x 10-', D23=f
36 62.50 D, 2.283 16.780 D, 18.000? ,500B,,=0
．． 24914 x 1O-8D,,=0.16372
x 10-'B,,=-0,48202x 10-
'D+a=0.75290 X 1O-I2=1.
80300 13=46.66 0.13374 =0. l13.
βｓＴ ＝３．２３５１１ 、 実施例３ ｆ＝３９．３〜１３２．６ ２ω＝５７．６６°〜１８５３゜ ｒｌ＝ １１１１．６７９６ ｄ、＝ １．７３００ ｒｚ＝４５．９４０４ ｄ２＝ １．７ｏｏ。βsT = 3.23511, Example 3 f=39.3~132.6 2ω=57.66°~1853° rl=1111.6796 d, = 1.7300 rz=45.9404 d2 = 1.7oo.
ｒｓ ＝ ７０．０４６５
ｄ、＝ ３．６８００
ｒ４＝ ４９３．３５８３
ｄ４＝ ０．２１００
ｒ％＝ ３４．３２１８
ｄｓ＝ ５．８５００
ｒ６＝ −１０２，１０３３
ｄｅ＝Ｄ＋（可変）
ｒ、＝−３６，１９２０
ｄ、＝ １．６２００
ｒａ＝２２．２８２７
ｎ４：＝ １．８３４８１
ｆｉ３＝ １．４９７００
ｎ２＝ １．６２ｔ１４１
０、＝ １．８３４００
Ｆ／４．６
〜Ｆ／７．７５
＝３７．１６
＝ ６０．２７
＝ ８１．６１
＝４２．７２
ｄ、＝ １．３２２９
ｒ−＝ ２８．５１５５ （非球面）ｄ９” ２．７
２００ ｎｓ＝ １．７８４７２ｒ、。＝−４５
，３４０６
ｄｌ。＝ ２．２９７８
ｒｚ ＝−２３，７７８３
ｄ、、 ” １．５３００ ｎ−＝ １．７００
０ロｒ１□ ＝ −３０，８７３４
ｄ＋□ ＝ ５．９５００
ｒｔｓ ＝■（絞り）
ｄｌ３ ＝１．９９６１
ｒ、、 ＝−１０２，２０８３
ｄ、４ ” ２．７５００ ｎｔ＝ １．６１７０゜
ｒ、ａ ＝−３３，５７３１
ｄ、５ ＝０．３８００
ｒ、、 ＝６６．３４９８
ｄ、、＝ ３．２４００ ｎｓ＝ １．６１２７２ｒ
、、＝−２７，２１２３
ｄ、、 ＝０．５７００
ｒ＋ａ ＝−２３，５２７５
ν、 ＝２５゜６８
シロ ：４８．０８
シ？＝６２．７９
ν８ ＝５８．７５
ｄ、ａ ＝１．７５０Ｏｎ５＝１．７８４７０ｒ、ｇ
ニア６．９２１０
ａｔｅ ＝０．４８００
ｒ２゜＝ ８５．００００
ｄ、、＝ ４．６５０Ｏｎ＋ｏ ＝ １．６１７２０
ｒＨ＝−２３，２５９３（非球面）
ｄｉ＋＝Ｄｉ（可変）
ｒ２□ ＝ ４８８．０７６２
ｄａｚ ＝ ３．３５００ ｎ、＝ １．７８４７
２、．３ ＝−３７，３９９７
ｄｚｓ ＝１．５１５７
ｒｔ−＝−３５，７１４５
ｄ、、＝ １．４５００ ｎ、、＝ １．７７２５Ｏ
ｒ□ ＝ ４４．５５９４
ｃ＋、、 ＝５．２５０Ｏ
ｒｓ６ ＝−２５，２０３８
ｄ、ｓ ＝ １．２６２ｏ ｎ、３ ＝ １．７
３５２０ｒａｔ ＝−５９，６０４１
非球面係数
（第９面）
＝ ２６．２２
ν、。＝ ５４．０４
シｚ＝２５．６８
ν１□＝４９．６６
シ、、＝４１．０８
Ａｓ ＝ −０，８９５５５ｘ ｔｏ−’Ｃ９＝０．
３７４９３ ｘｌＯ−”
（第２１面）
Ａ２．＝ ０．８２９２２ ｘ １０−’Ｃ２，＝
−０，２０７４８ｘ １０−”ｆ ３９．３
Ｄ、 １．９５０
０２ １８．４８５
ＰＨ／Ｆｗ ＝０．４１６６ 、
β３？＝３．８
実施例４
ｆ＝３９．３〜１３２．６
２ （，１＝ ｇ７．６６”〜１８．５３゜ｒ 、 ＝
５４７５．５２８９
Ｂ、、＝ ０．１６３１０ ｘ １０−’Ｄｚ＋＝
０．９０２８２ Ｘ １０−１２８９．１
１３２．６
１４．７２２ １８．０７７
５．４４２ １．４５０
ｖ１１１２ｗ／Ｐｗ ＝ １．３３６
ｅ ２ ＝２６．２８８
Ｂｑ ＝−０，９５６９４ｘ ｔｏ−”Ｄ、 ＝
−０，３０４１４ｘ １０−”Ｆ／４．５ 〜Ｆ７７．
７１
ｄ、＝ ｔ、７２００
Ｑ、＝ １．８３４００
ν、 ＝３７．１６
ｒｚ＝５０．６１９９
ｄ２＝ １．２０００
ｒｓ＝ ７９．７８０５
ｄ、＝ ３．６５０Ｏ
ｒ、＝４１３．２２９２
１、： １．６４０００
ν２ ＝６０．０９
ｄ、＝ ０．２０００
ｒｓ” ３３．４９９０
ｄ、ｉ＝５．２５００
ｒｓニー１１０．０６００
ｄｓ＝Ｄ＋（可変）
ｒｙ＝−３２，００２０
ｄ、＝ １．６２００
ｒａ＝２１．９７８９
ｄｓ＝ １．３０８０
ｒ９＝ ２７．９９７５ （非球面）ｄ＊＝ ２．７
２００ ｎｓ＝ １．７８４７２ｒ、。＝−４１
，０６４１
ｄｌ。 ＝２、口０００
ｒ１＋ ＝−２３，２２０９
ｄｌｌ ＝１．８５００ 口ａ＝１．７０００゜
ｒｔｚ ＝−３０，０７２６
ｄ１□ ＝ ３．８５００
ｒ１３＝ｏｏ（絞り）
ｄ、３ ＝２．１５００
ｒ、、 ＝−２３２，０３５３
１１４＝ １．８４１００
ｎｓ＝１．４９７００
＝ ８１．６１
＝４３．２３
＝、２５．６８
＝ ４８．０８
ｄ、、 ＝２．７５０Ｏ
ｒ、、 ”−３６，８４０８
ｄ、、 ＝０．３５０Ｏ
ｒ、ｓ ＝６５．９９５３
ｎｔ＝１．６１８００
ν、 ＝６３．３８
ｄ＋６ ＝３．２４０Ｏｎ−＝１．６０８８１ν、
＝５８．９４
ｒ、、 ＝−２８，２２４１
ｄ、、 ＝０．５８５０
ｒｌｓ ＝−２４，１１０４
ｄ、、 ” １．７５００ ｊｌ、＝ １．７８
４７０ｒ１ｓ ＝ ５２．７０４３
ｄ、９ ＝ｏ、ａｓｓ。rs = 70.0465 d, = 3.6800 r4 = 493.3583 d4 = 0.2100 r% = 34.3218 ds = 5.8500 r6 = -102,1033 de = D + (variable) r, = -36, 1920 d, = 1.6200 ra = 22.2827 n4: = 1.83481 fi3 = 1.49700 n2 = 1.62t141 0, = 1.83400 F/4.6 ~ F/7.75 = 37.16 = 60.27 = 81.61 =42.72 d, = 1.3229 r- = 28.5155 (Aspherical surface) d9” 2.7
200 ns=1.78472r,. =-45
, 3406 dl. = 2.2978 rz = -23,7783 d,, ” 1.5300 n- = 1.700
0ro r1□ = -30,8734 d+□ = 5.9500 rts = ■ (aperture) dl3 = 1.9961 r,, = -102,2083 d, 4'' 2.7500 nt = 1.6170゜r, a =-33,5731 d, 5 =0.3800 r,, =66.3498 d,, = 3.2400 ns = 1.61272r
,,=-27,2123 d,, =0.5700 r+a =-23,5275 ν, =25°68 Shiro: 48.08 Shi? =62.79 ν8 =58.75 d,a =1.750On5=1.78470r,g
Near 6.9210 ate = 0.4800 r2゜ = 85.0000 d,, = 4.650On+o = 1.61720
rH=-23,2593 (aspherical surface) di+=Di (variable) r2□ = 488.0762 daz = 3.3500 n, = 1.7847
2. 3 = -37,3997 dzs = 1.5157 rt- = -35,7145 d,, = 1.4500 n,, = 1.7725O
r□ = 44.5594 c+,, =5.250O rs6 = -25,2038 d, s = 1.262on, 3 = 1.7
3520rat = -59,6041 Aspheric coefficient (9th surface) = 26.22 ν,. = 54.04 sz=25.68 ν1□=49.66 s,,=41.08 As=-0,89555x to-'C9=0.
37493 xlO-” (21st side) A2.= 0.82922 x 10-'C2,=
−0,20748x 10-”f 39.3 D, 1.950 02 18.485 PH/Fw =0.4166, β3?=3.8 Example 4 f=39.3~132.6 2 (,1 = g7.66"~18.53゜r, =
5475.5289 B,, = 0.16310 x 10-'Dz+=
0.90282 x 10-1289.1
132.6 14.722 18.077 5.442 1.450 v1112w/Pw = 1.336 e 2 =26.288 Bq =-0,95694x to-”D, =
-0,30414x 10-”F/4.5 ~F77.
71 d, = t, 7200 Q, = 1.83400 ν, = 37.16 rz = 50.6199 d2 = 1.2000 rs = 79.7805 d, = 3.650O r, = 413.2292 1,: 1 .64000 ν2 =60.09 d,=0.2000 rs” 33.4990 d,i=5.2500 rs knee 110.0600 ds=D+(variable) ry=-32,0020 d,=1.6200 ra= 21.9789 ds= 1.3080 r9= 27.9975 (Aspherical surface) d*= 2.7
200 ns=1.78472r,. =-41
, 0641 dl. =2, mouth 000 r1+ =-23,2209 dll =1.8500 mouth a=1.7000゜rtz =-30,0726 d1□ = 3.8500 r13=oo (aperture) d, 3 =2.1500 r, , =-232,0353 114= 1.84100 ns=1.49700 = 81.61 =43.23 =, 25.68 = 48.08 d,, =2.750O r,, ”-36,8408 d, , = 0.350O r, s = 65.9953 nt = 1.61800 ν, = 63.38 d+6 = 3.240 On- = 1.60881 ν,
=58.94 r,, =-28,2241 d,, =0.5850 rls =-24,1104 d,, ” 1.7500 jl, = 1.78
470r1s = 52.7043 d, 9 = o, ass.
ｒｈｏ ＝６１．９８０５
ｄｚｏ ＝４．０００Ｏｎｅｏ ＝１．６１７２０
ｒ２１＝−２２−１３６６（非球面）
ａｚ＋＝［ｌａ （可変）
ｒｚｚ ＝ １９３．４７２５
ｄｉ□ ＝ ３．３５００ ｎ＋ ＋ ＝ １．
７８４７０ｒｚｓ ＝ −３６，７３６０（非球面）ｄ
２． ＝ｏ、ｑｓｏ。rho =61.9805 dzo =4.000 Oneo =1.61720
r21=-22-1366 (aspherical surface) az+=[la (variable) rzz=193.4725 di□=3.3500 n++=1.
78470rzs = -36,7360 (aspherical surface) d
2. = o, qso.
ｒ２＊ ＝−３６，４６８０
ν、 ＝２６．２２
ν、。＝ ５４．０４
シｚ＝２６．２２
ｄ、、 ＝ １．４５０Ｏｎ、２ ” １．７７２５
０ ｖ、、＝ ４９．６６ｒ、、 ＝４０．３３１
４
ｄ、５ ＝５．４５００
ｒｚｓ ＝−２６，１１１９
ｄ２６ ＝ １．７５０Ｏｎ、、 ＝ １．７３５２
０ １’ｌａ ＝ ４１．０８ｒｚｔ ＝−６９，
２４９６
非球面係数
（第９面）
Ａ、 ＝−０，１６５７２ｘ １０−’ 、 Ｂ、＝−
０，１０９９６ｘ １Ｏ−７Ｃ，＝０．４４８７８ ｘ
１０−’ 、 Ｄ９ ＝−０，３４８８５ｘ １０−
（第２１面）
Ａ２．＝０．９７２６１ ｘｌＯ−５，８２，＝０．１
９９２６ ｘｌＯ−’Ｃ，，＝−０．３６８０２ｘ １
０−９ 、 ０２．＝０．２０１９３ ｘ ｌ０伺
（第２３面）
Ａ２３＝−０，６８７８０ｘ １０−６．８．、＝０．
９９０６７ ｘ １Ｏ−８Ｇ２３＝ ０．６９５１３
Ｘ １０−” Ｄ２２＝−０，４９４９３Ｘ １Ｏ−
１２ｆ ３９．３ ８９．１ １３２．６Ｄ、
２．０９０ １４．８０２ １８．１６６０、
１８．６２５ ５．５２２ １．５３９！Ｉ／
Ｆ、 ＝０．４０５５、！＋ｚｗ／Ｆｗ ＝ １．３４
６β、、、 ＝３．８５１３ 、 ｅ ２
＝２１．８６３実施例５
ｆ：３９．３〜１３１．６ 、 Ｆ／４．６〜Ｆ／
７．７５２ω＝ ５７．６６’〜１８．６７”
ｒ＋＝８０．７３４３
ｄ１＝ １．９０００ ｎ１＝ １．８３４００
ｖ＋ ＝ ３７．１６ｒ２ ＝ ３８．４８３８
ｄ、＝ ３．２０００
ｒｓ ＝−７５，７９５６
ｄ、＝ ２．８０００
Ｑ２＝ ｉ、６４０００
ν２ ＝６０．０９
ｒ４＝ −９０，７９７１
ｄ、＝ ０．２０００
ｒｓ ＝ ３２．６３９８
ｄａ＝ ５．５０００ ｆｉ、＝ １．４９７０
Ｏｒ、＝−１１４，９０８０
ｄａ＝Ｏ＋（可変）
ｒｔ＝−２８，６３４２
ｄｙ＝ １．７０００ ｎ４＝ １．８３４８１
ｒ８＝ ２２．４４８３
ｄ、＝ １．３２００
νｇ ＝８１．６１
ν４ ＝４２．７２
ｒ、＝３１．３９２１ （非球面）
ｄ、＝ ２．８５００
ＩＩｓ＝ １．７８４７２
ｒ＋ｏ ”−８７，２０１７
ｄ、。 ＝ ２．３０００
ｒ＋＋ ＝−１０５，４９２４
ｄ、、 ＝２．４０００ ｎ、＝１．７００００シ
ｓ ”２５．６８
ν、 ＝４８．０８
ｒ＋ｚ ＝−２８，８０１３
ｄ１□ ＝ ５．９８００
ｒ１３＝ｃｘ：＋（絞り）
ｄ、、 ＝２．０００Ｏ
ｒ＋４ ＝−３１３，１５２２
ｄ、４ ＝２．７５０Ｏ
ｒｌｓ ＝−５０，４７７６
ｄ、５ ＝０．３００Ｏ
ｒ、ｓ ＝１０９．０１５７
ｄ、、 ＝ ３．２５００
ｒｌｙ ＝−４９，２７１３
ャモ＝；１ｉｈ−嬶
ｈ７＝
Ｇ１７ｏ。r2* =-36,4680 ν, =26.22 ν,. = 54.04 sz = 26.22 d,, = 1.450On, 2 ” 1.7725
0 v,,=49.66r,,=40.331
4 d, 5 = 5.4500 rzs = -26,1119 d26 = 1.750 On,, = 1.7352
0 1'la = 41.08rzt = -69,
2496 Aspheric coefficient (9th surface) A, =-0,16572x 10-', B, =-
0,10996x 1O-7C,=0.44878x
10-', D9 =-0,34885x 10-
(Page 21) A2. =0.97261 xlO-5,82,=0.1
9926 xlO-'C,,=-0.36802x 1
0-9, 02. =0.20193 x l0 (23rd page) A23=-0,68780x 10-6.8. ,=0.
99067 x 1O-8G23 = 0.69513
X 10-” D22=-0,49493X 1O-
12f 39.3 89.1 132.6D,
2.090 14.802 18.1660,
18.625 5.522 1.539! I/
F, =0.4055,! +zw/Fw = 1.34
6β,,, =3.8513, e2
=21.863 Example 5 f:39.3~131.6, F/4.6~F/
7.752ω= 57.66'~18.67" r+=80.7343 d1= 1.9000 n1= 1.83400
v+ = 37.16r2 = 38.4838 d, = 3.2000 rs = -75,7956 d, = 2.8000 Q2 = i, 64000 ν2 = 60.09 r4 = -90,7971 d, = 0.2000 rs = 32.6398 da = 5.5000 fi, = 1.4970
Or, = -114,9080 da = O + (variable) rt = -28,6342 dy = 1.7000 n4 = 1.83481
r8 = 22.4483 d, = 1.3200 νg = 81.61 ν4 = 42.72 r, = 31.3921 (aspherical surface) d, = 2.8500 IIs = 1.78472 r+o ”-87,2017 d, =2.3000 r++ =-105,4924 d,, =2.4000 n, =1.70000 s ”25.68 ν, =48.08 r+z =-28,8013 d1□ = 5.9800 r13= cx:+(aperture) d,, =2.000O r+4 =-313,1522 d,4 =2.750O rls =-50,4776 d,5 =0.300O r,s =109.0157 d,, = 3.2500 rly =-49,2713 Jamo=;1ih-嬶h7=G17o.
シフ
＝ Ｇ２．７’？
ｊｌ、＝ １．６１２７２
ν、 ＝５８．７５
ｄ＋ｙ ＝０．７０００
ｒｌｓ ”−３６，６１７５
ｄ、８ ” １．７５００ Ｑ９＝ １．７８４７
２ν９＝２５．７１
ｒｌａ ＝ ４６．０３７７
ｄ＋ｓ ”１．００００
ｒｘｏ ＝ ８２．１０６２
ｄｚｏ ＝ ４．６５６Ｏｎ、、 ＝ １．６１７２
０ ｖ、、＝ ５４．０４ｒ２１＝ −２１−９３８
３（非球面）ｄｉ＋ ＝’Ｄ２ （可変）
ｒ２□ ＝ −２７７７，０２２７
ｄａａ ＝３．３５０Ｏｎ＋＋ ＝１．７８４７２
シ＋＋＝２５．６８ｒ、、 ＝−４１，０３７３
ｄｚｚ ＝１．５１５７
ｒｌ４ ＝−３６，７６９３
ｄｚ４ ＝ １．４５０Ｏｎｒｚ ＝ １．７７２５
０ １）＋ｚ＝ ４９．６６ｒ、、 ＝ ４５．９９
４２
ｄ、、 ＝４．６０００
ｒ２． ＝−４６，８７２５
ｄａ６ ＝１．６００Ｏｎｒｚ ＝１．７３５２０
ｖ＋５＝４１．０８ｒ２ｔ ＝−１１０，６８１５
非球面係数
（第９面）
Ａｅ ＝−０，５２８７３ｘ ＩＱ−ｓ Ｂｅ ＝
−０，６８６０２ｘ ｔｏ−’Ｃ，＝０．１８５５７
ｘ ｔｏ−” 、 Ｄ、 ＝−０，１１９２３ｘ １０
−〇（第２１面）
Ａｆｆｉ、＝ ０．７６４６４ Ｘ ｔｏ−’Ｃ，，
＝０．１４３８７ ｘ １０−’ｆ ３９
．３
Ｄ、 １．７００
Ｄ、 ２０．９６４
！、／Ｉｌ’、 ＝０．３３ 、
β、ア ＝ ３．７０８５
実施例６
ｆ＝３９．３〜１３１．６
２ω＝ ５７．６６’〜１８．６７”
ｒ＋＝２０１．３５６６
ｄ、＝ １．７５００
ｒ２ ＝ ４３．２６０４
ｄ、＝ １．７０００
ｒ、＝ １３４．５９６６
ｄ３＝ ：１．７０００
ｒ、 ＝ −８５２，０８５１
ｄ、＝ ０．２１００
νｌ ＝３７．１６
シ、 ＝６５．４８
Ｆ／４．６ 〜Ｆ７７．７５
Ｂ２．＝ −０，８１４７６ｘ １０−７０、、＝ −
０，８３４４６ｘ １０−目８９．１ １３１
．６
１７．９６５ ２１．６７３
５．７９３ １．２４２
１”＋２Ｗ／ＦＷ ＝ １．：１０７４ｅ、＝６９．
７４６
ｎ２＝ １．６０３００
ｎｒｚ１．８３４００
ｒｓ： ２９．１１９４
ｄＳ＝ ５．８０００
ｒｓ＝−１１７，０７０３
ｄｓ＝Ｄ＋（可変）
ｒｔ”−２７，５８５９
ｄｙ＝ １．７０００
ｒｓ” １８．８６８２
ｄ、＝ １．：１２００
ｒ、＋＝２８．８１７６ （非球面）ｄ−＝ ２．８
５０Ｑ ｎｓ＝ １．７８４７２「１゜ ＝−５３
，７７０１
ｄｌ。＝ ２．３０００
ｒ＋＋ ＝−３１，２７７５
ｄ、 ＝１．８５００ ｎａ＝１．７０００Ｏｒ＋
２ ＝−２１，１５３２
ｄ、□ ＝ ５．９８００
ｒｌａ ：ＱＱ （絞り）
ａ＋３ ＝２．００００
ｆｉ、＝ １．４９７００
ｆｉ４＝ １．８３４８１
ν３ ＝８１．６１
ν、 ＝４２．７２
シ５＝２５．６８
νａ ”４８．０８
ｒｌ＜ ＝−１１７，０１９７
ｒｌｓ ＝−４０，５１７６
ｄ、、 ＝０．３０００
ｒｌａ ＝９８．８８８７
ｄ、ｓ ” ３．２５００ ｎａ＝ １．６１２
７２ｒ、、 ＝−４４，５４９０
ｄ、、 ＝０．５７０Ｏ
ｒｌａ ＝−２４，５４５４
ｄ＋＊ ＝ １．７５００ ｎｓ＝ １．７８４
７２ｒ＋９ ＝ ９０．１２２３
ｄ、、 ＝０．４０００
ｒａｏ ＝ １３６．５９５９
ｄｚｏ ＝ ４．６５００ ｎ１０ ＝ １．６
１７２Ｏｒ、、 ＝−１８，１７４６（非球面）ｄｉ＋
＝Ｄｘ（可変）
ｒ２□ ＝ −８６１，０３７６
ｄ２ａ ＝ ３．３５００ １１＋ ＝ １．７８
４７２ｒ、、 ＝−３８，８６６４
ｄｚ３ ＝１．５１５７
シ、 ＝５８．７５
ν９ ＝２５．７１
ν、。＝ ５４．０４
シ、、＝２５．６８
ｒｌ４ ＝−３５，５９９４
ｄ＋、 ＝ ２．７５００ ｎｔ＝ １．６１７０
０νｔ ”６２．７９
ｄ２．＝１．４５００ ｎ、□ ＝１．７７２５０
ν、、＝４９．６６ｒ２５ ＝ ４５．９９５２
ｄ２５ ＝５．２５００
ｒ２． ＝−３４，６９２３
ｄ２ａ ＝ １．２６２０ ｎ１３ ＝ １．
７３５２０ ｖ＋３＝ ４１．０８ｒａｙ ＝−
６４，４７９２
非球面係数
（第９面）
Ａｓ ＝Ｏ，１６２６１Ｘ １０−５．８９＝−０，２
８８０６ｘ ｔｏ−’Ｃ９＝０．１３７１７ Ｘ １０
−’ 、ｎ９＝−０，６２９４８Ｘ １０−目（第２１
面）
Ａ２１＝ ０．１１８５０ Ｘ １０−’ 、
Ｂ２１＝ −〇、４０１６５Ｘ １０−’Ｃ，，＝
０．’ｊ３４２３ｘ１０−９０２．＝−０，４１１０５
ｘｌＯ−ｆ ３９．３ ８９．１ １３１．６
Ｄ、 １．９００ １４．４１１ １７．１１０
Ｄ２２０．８２６ ５．８６４ １．２７０Ｆ＋／
Ｐｗ ＝０．４９、Ｆ＋ □ｗ／’Ｐｗ ＝ １ 、３
０７Ｂ３Ｔ＝３．６６１７ 、 ｅ ａ＝ ４：１
．３３１実施例７
ｆ ＝ ３９．３７〜１０２．６９ 、 Ｆ／３．３
８〜Ｆ／６．４２ω＝５７．５８°〜２３．７９”
ｒｌ ＝ ２２９．９７６９
ｄ ＝ １．７３００ （’１．： １．８３
４００ｒｚ＝２８．１９１４
ｄ２＝ １．３５００
ｒｓ＝ ４４．７５９９
ｄ、＝ ３．６８００
ｒ４： ２２４．２７８７
ｄ４＝ ０．２１００
ｒｓ＝ ２５．８６９９
ｄｓ＝ ５．８５００
ｒａミニ−９，５レンズ
ｄ６＝Ｄ、（可変）
ｒ、＝ −３４，８１０３
ｄ、＝ １．６２００
ｒ８＝ ２７．５５８４
ｄａ”１．０２００
ｒ９＝３３．２７７５
ｄ９＝ ２．７２００
ｒ、ｏ ＝−１０４，１０５４
ｄ、ｏ ＝１．９２００
ｎ４＝ １．７９５００
ｎ ｓ ” １ 、７８４７２
ｎｘ” １．６２０４１
Ｑ、＝ １．５５６７１
ν１
ν２
＝３７．１６
＝６０．２７
シ、＝５８
シ、＝４５
ν５
＝ ２５．６８
ｒ、、 ＝−１５７，１２６６
ｄ、、 ＝１．５３０Ｏｎ、＝１．６９１００
ｖ、 ＝５４．８４ｒ、２ ＝−４０２７１，８３
３１
ｄ、、 ＝５．２６６０
ｒ１３＝（資）（絞り）
（Ｌ３ ＝３．４７２０
ｒｌ４ ＝１４７．１８７５
ｄ、４ ＝ ２．７５００ ｎｙ＝ １．６３６３
６ ｖｔ ＝ ３５．３７ｒ、ｓ ”−３０
，９２８０
（Ｌｔ、 ＝０．３８００
ｒｌａ ＝７２．４４６２
ｄｌａ ＝ ３．２４００ ｎ８＝ １．６２２
３０ ｖａ ＝ ５３．２Ｏｒ＋７ ＝−４
５，１４２１
ｄ１□ ＝０゜８５００
ｒｌｓ ＝−１８，４６６３
ｄ、８ ＝１．７５０Ｏｎ５＝１．７４０ロ０
１／ｓ ＝２８．２９ｒ＋９ ＝２８．０５９３
ｄ、、 ＝ ４．６５０Ｏｎ、、 ” １．６２２
９９ シ、、＝５８．１４ｒ２ｏ ”−１８，５
２３９
ｄ２゜＝９２（可変）
ｒａ＋ ＝−４５，２１１９
ｄ、、 ＝２．９５００
ｒ、、”−２０，９１４６
ｄ２□ ＝ ｉ、５５００
ｒｔｓ ＝−１９，７５９１
ｄａ３ ＝１．４５００
ｒｌ４ ＝−１０２，３４０５
ｄ２． ＝２．７２００
ｒ２ｓ ”−３１，４９１２
ｄ、ｓ ＝１．３０００
ｒｌ６ ：ｏ。Schiff = G2.7'? jl, = 1.61272 ν, = 58.75 d+y = 0.7000 rls ”-36,6175 d, 8 ” 1.7500 Q9 = 1.7847
2ν9=25.71 rla = 46.0377 d+s ”1.0000 rxo = 82.1062 dzo = 4.656On,, = 1.6172
0 v,,=54.04r21=-21-938
3 (aspherical surface) di+ ='D2 (variable) r2□ = -2777,0227 daa =3.350On++ =1.78472
C++=25.68r,, =-41,0373 dzz =1.5157 rl4 =-36,7693 dz4 = 1.450Onrz = 1.7725
0 1) +z = 49.66r,, = 45.99
42 d,, =4.6000 r2. =-46,8725 da6 =1.600 Onrz =1.73520
v+5=41.08r2t=-110,6815 Aspheric coefficient (9th surface) Ae=-0,52873x IQ-s Be=
-0,68602x to-'C,=0.18557
x to-”, D, =-0,11923x 10
-〇 (Side 21) Affi, = 0.76464 X to-'C,,
=0.14387 x 10-'f 39
．． 3 D, 1.700 D, 20.964! , /Il', = 0.33, β, a = 3.7085 Example 6 f = 39.3 ~ 131.6 2ω = 57.66' ~ 18.67'' r + = 201.3566 d, = 1. 7500 r2 = 43.2604 d, = 1.7000 r, = 134.5966 d3= : 1.7000 r, = -852,0851 d, = 0.2100 νl = 37.16 ci, = 65.48 F/ 4.6 ~F77.75 B2.= -0,81476x 10-70,, = -
0,83446x 10th 89.1 131
．． 6 17.965 21.673 5.793 1.242 1”+2W/FW = 1.:1074e, =69.
746 n2= 1.60300 nrz1.83400 rs: 29.1194 dS= 5.8000 rs=-117,0703 ds=D+ (variable) rt"-27,5859 dy= 1.7000 rs" 18.8682 d,= 1. :1200 r, +=28.8176 (aspherical surface) d-=2.8
50Q ns = 1.78472 "1° = -53
, 7701 dl. =2.3000 r++ =-31,2775 d, =1.8500 na=1.7000Or+
2 = -21,1532 d, □ = 5.9800 rla : QQ (aperture) a+3 = 2.0000 fi, = 1.49700 fi4 = 1.83481 ν3 = 81.61 ν, = 42.72 Si5 = 25 .68 νa "48.08 rl< =-117,0197 rls =-40,5176 d,, =0.3000 rla =98.8887 d,s" 3.2500 na= 1.612
72r,, =-44,5490 d,, =0.570O rla =-24,5454 d+* = 1.7500 ns= 1.784
72r+9 = 90.1223 d,, =0.4000 rao = 136.5959 dzo = 4.6500 n10 = 1.6
172Or,, =-18,1746 (aspherical surface) di+
=Dx (variable) r2□ = -861,0376 d2a = 3.3500 11+ = 1.78
472r,, =-38,8664 dz3 =1.5157 ci, =58.75 ν9 =25.71 ν,. = 54.04 ci, , = 25.68 rl4 = -35,5994 d+, = 2.7500 nt = 1.6170
0νt ”62.79 d2.=1.4500 n, □ =1.77250
ν,,=49.66r25=45.9952 d25=5.2500 r2. =-34,6923 d2a = 1.2620 n13 = 1.
73520 v+3=41.08ray=-
64,4792 Aspheric coefficient (9th surface) As =O,16261X 10-5.89=-0,2
8806x to 'C9=0.13717 x 10
-', n9=-0,62948X 10th (21st
surface) A21 = 0.11850 x 10-',
B21= -〇, 40165X 10-'C,,=
0. 'j3423x10-902. =-0,41105
xlO-f 39.3 89.1 131.6
D, 1.900 14.411 17.110
D220.826 5.864 1.270F+/
Pw = 0.49, F+ □w/'Pw = 1, 3
07B3T=3.6617, e a= 4:1
．． 331 Example 7 f = 39.37-102.69, F/3.3
8~F/6.42ω=57.58°~23.79" rl = 229.9769 d = 1.7300 ('1.: 1.83
400rz = 28.1914 d2 = 1.3500 rs = 44.7599 d, = 3.6800 r4: 224.2787 d4 = 0.2100 rs = 25.8699 ds = 5.8500 RA mini-9,5 lens d6 = D, (variable) r, = -34,8103 d, = 1.6200 r8 = 27.5584 da"1.0200 r9 = 33.2775 d9 = 2.7200 r,o = -104,1054 d,o = 1.9200 n4= 1.79500 n s ” 1 , 78472 nx” 1.62041 Q, = 1.55671 ν1 ν2 = 37.16 = 60.27 si, = 58 si, = 45 ν5 = 25.68 r, , =-157,1266 d, , =1.530On, =1.69100
v, =54.84r, 2 =-40271,83
31 d,, =5.2660 r13 = (capital) (aperture) (L3 = 3.4720 rl4 = 147.1875 d, 4 = 2.7500 ny = 1.6363
6 vt = 35.37r, s”-30
,9280 (Lt, =0.3800 rla =72.4462 dla = 3.2400 n8 = 1.622
30 va = 53.2Or+7 = -4
5,1421 d1□ =0°8500 rls =-18,4663 d,8 =1.750On5=1.740ro0
1/s = 28.29r+9 = 28.0593 d,, = 4.650On,, ” 1.622
99 shi,,=58.14r2o ”-18,5
239 d2゜=92 (variable) ra+ =-45,2119 d,, =2.9500 r,,"-20,9146 d2□ = i, 5500 rts =-19,7591 da3 =1.4500 rl4 =-102 ,3405 d2. =2.7200 r2s ”-31,4912 d,s =1.3000 rl6 :o.
ｆ ３９．３７
Ｄ、 ２．５５０
０２ １８．５７０
９’、／ＦＷ ＝０．５６３ 、
β−Ｔ ＝２．７８１
実施例８
ｆ＝３９．５〜１０２．７
２ω＝５７．４’〜２３．８’
「、＝ １１５．２６７０
ｎ＋−”１．７２９１６ ν
ｎ＋□ ＝ １．７２９１６ ’Ｌ）＋２＝ ５４ｎ
＋ １ ＝ １．７８４７０
６２．９ １０２．６９
１２．５６０ １７．５９０
９．８３０ ２．８２０
１’１２Ｗ／ＦＷ ＝ １．３２１
ｅ’２ ＝ ２１．５２５
シ１＋＝２６．３０
３＝５４．６８
Ｆ／４．６５〜Ｆ／６．５５
ｄ、＝ １．４００Ｏ
ｒ、＝２８．８３３１
ｄ２＝ ０．７１００
ｒｓ＝２８．２６５１
ｄ３＝３．４００Ｏ
ｒ、＝ １０２．８７０７
ｎ＋＝１．８３４００
ｎｍ＝１．６０３００
ｄ、＝ ０．２０００
ｒｓ＝２９．０７２１
シ＋＝３７．１６
シ２
： ６５．４８
ｄ５＝３．８０００
ｎｍ＝１．５５６７１
ν３
＝ ５８．６８
ｒ６＝−３３９，３６９７
ｄ、＝Ｄ、（可変）
ｒｔ ＝−１９，５６９５
ｄ、＝ １．４０００
ｒａ＝３３．４８５６
ｄ、＝ ０．５５００
ｒｅ＝３２．５００５
ｄ、＝ ２．５０００
ｒ、、 ＝−７０，３０９２
ｄ、。 ＝０．５００Ｏ
ｒ、、 ＝−９７，０８９１
ｆｉ４＝ １．７９５００
ｎｍ＝１．７８４７２
ν、 ＝４５．２９
νＳ ＝２５．６８
ｒｔｚ
「１３
ｄ、、 ＝１．４０００
＝−１３０５，１３３４
ｄ＋ｚ ＝１．００００
＝ｏｏ（絞り）
ｄ＋３ ”１．００００
ｎｓ” １．６９１００
ｒ＋４ ”−１３３，７９７２
ｄ＋４ ＝２．２５００
ｒ＋ｓ ”−１８，７６４７
ｄ＋ｓ ”０．２０００
ｒ、ｅ ＝３８．５６８８
ｆｉ、＝ １．６３６３６
ｄｌｓ ＝ ２．５０００ ０８＝ １．６２２３
゜ｒａｙ ＝−４４，５８８６
ｄ、、 ＝０．８５００
ｒ＋ａ ＝−１６，５１６１
ｄ、、＝ ｉ、２５００ ｎ、＝ １．７４００゜ｒ
＋＊ ＝３３．１１２６
ｄ、、 ＝０．２４００
ｒｚｏ ＝ ３９．７５４９
ｄ、、＝ ３．２５０Ｏｎ、、＝ １．６２２９９ｒ＊
＋ ＝−１６，５４６０
＝ ５４．８４
＝３５．３７
＝ ５３．２０
＝ ２８．２９
ν１゜＝５８．１４
ｄ２１ ＝０２ （可変）
ｒａ２ ”−２３，９５３９
ｄ２２ ＝２．９５０Ｏｎ、、 ＝１．７８４７０
シ、、＝２６．３０ｒ２ｚ ＝−１７，３７１６
ｄ２３ ＝０．８６００
ｒ２４ ＝−２４，３０５５
ｄ、、 ＝１．３０００
ｒ２５ ＝−３３，１８２８
ｄ２ｓ ’＝ ２．１０００
ｒａ６ ＝−１８，２６６１
ｄ、６ ＝１．３０００
ｒｚｔ＝−３０４，９２３３
ｆ ３９．５
Ｄ、 ２．５５０
０２ １８．８５０
Ｐ、／Ｔｏｗ ＝０．５９６ 、
β、、 ＝２．８２４
実施例９
ｆ ＝ ２９．３６〜？５． ｌ。f 39.37 D, 2.550 02 18.570 9', /FW = 0.563, β-T = 2.781 Example 8 f = 39.5 ~ 102.7 2ω = 57.4' ~ 23 .8'", = 115.2670 n+-"1.72916 ν n+□ = 1.72916 'L)+2= 54n
+ 1 = 1.78470 62.9 102.69 12.560 17.590 9.830 2.820 1'12W/FW = 1.321 e'2 = 21.525 C1+=26.30 3=54. 68 F/4.65 ~ F/6.55 d, = 1.400O r, = 28.8331 d2 = 0.7100 rs = 28.2651 d3 = 3.400O r, = 102.8707 n+ = 1.83400 nm=1.60300 d, = 0.2000 rs=29.0721 si+=37.16 si2: 65.48 d5=3.8000 nm=1.55671 ν3=58.68 r6=-339,3697 d , =D, (variable) rt = -19,5695 d, = 1.4000 ra = 33.4856 d, = 0.5500 re = 32.5005 d, = 2.5000 r,, = -70,3092 d ,. =0.500O r,, =-97,0891 fi4=1.79500 nm=1.78472 ν, =45.29 νS =25.68 rtz "13 d,, =1.4000 =-1305,1334 d+z = 1.0000 =oo (aperture) d+3 "1.0000 ns" 1.69100 r+4 "-133,7972 d+4 =2.2500 r+s "-18,7647 d+s "0.2000 r, e =38.5688 fi, = 1.63636 dls = 2.5000 08 = 1.6223
゜ray = -44,5886 d,, =0.8500 r+a = -16,5161 d,, = i, 2500 n, = 1.7400゜r
+* =33.1126 d,, =0.2400 rzo = 39.7549 d,, = 3.250On,, = 1.62299r*
+ =-16,5460 = 54.84 =35.37 = 53.20 = 28.29 ν1° = 58.14 d21 =02 (variable) ra2 ''-23,9539 d22 =2.950On,, =1. 78470
,, =26.30r2z =-17,3716 d23 =0.8600 r24 =-24,3055 d,, =1.3000 r25 =-33,1828 d2s' = 2.1000 ra6 =-18,2661 d, 6 = 1.3000 rzt = -304,9233 f 39.5 D, 2.550 02 18.850 P, /Tow = 0.596, β,, = 2.824 Example 9 f = 29.36~? 5. l.
２ω＝ ７２．８＠〜３２． ｌ’
６３．２ １０２．７
１２．５６０ １７．５９０
９．８３０ ２．８２０
Ｆ＋ ２ｗ／Ｆｗ ＝ １．３３２
ｅ ２ ＝ ＩＯ，８ｓ２
ｎ＋ｚ ＝ １．７２９１６ Ｕ＋ｚ＝ ５４．
６８ｎ＋ｘ ＝ １．７２９１６ ν１１＝ ５４
．６８Ｆ／４．６２〜Ｆ７６．５５
ｒ＋＝８５．９４２２
ｄ、＝ １．４０００
ｒｔ＝ ２７．５７８４
ｄ、＝ ０．６５００
ｒｚ＝２７．５２２５
ｄ、＝ ４．１０００
ｒ４： １０７．２８９５
ｄ、＝ ０．２０００
ｒｓ＝３２．６７５３
ｄ５＝ ４．２０００
ｒａ”−３５２，２６５７
ｄ、＝Ｄ、（可変）
ｒｔ＝−１８，２０６２
ｄｙ＝ １．４００Ｏ
ｒ、ｌ＝ ２８．７１５９
ｄａ＝ ｏ、５５００
ｒｅ ＝４３．３６７７
ｄ、＝２．５００Ｏ
ｒ、、 ＝−５４，１４３９
ｄ＋ｏ ＝０−５０００
ｎ、＝ １．８３４００
ｎ ２ ＝ １ 、６０３００
Ｑ３＝ １．５５９６３
Ｑ４＝ １．７９５００
Ｑ、＝ １．８０５１８
＝ ３７．１６
＝ ６５．４８
＝ ６１．１７
＝４５．２９
＝２５．４３
ｒ、 ＝−６１，６５６８
ｄ、 ＝１．４０００ ｎ５＝１．６９１００「１
□ ＝−７３，５２９３
ｄｌ□ ＝ １．００口Ｏ
ｒ１ユ＝ｏｏ（絞り）
ｄｌ３ ＝１．００００
ｒ、４ ＝−１３８，０６２９
ｄｌ４ ＝２．２５００ ｒ＋ｙ＝１．５９２７０
ｒ、ｓ ＝−１７，０５２５
ｄ、、 ＝０．２０００
ｒ＋ａ ＝４３．９７２８
ｄ、、 ” ２．５０００ ｎａ＝ １．７１２８
５ｒａｙ ＝−３３，７６９２
ｄ、、 ＝０．８５００
ｒ＋ｌｌ ＝−１３，９４９３
ｄ、、 ” １．２５０ｏ ｎ、＝ １．７４０
００ｒ、−＝ ３３．０５５４
ｄｌ９ ＝０．３５００
ｒｈｏ ＝３６．６４０２
ｄ２゜ ＝ ３．２５００ 口、。 ＝ １．６０
３００シロ ＝５４．８４
νｔ ＝３５．２９
ν８ ＝４３．１９
ν、 ＝２８．２９
ν１゜＝ ６５．４８
ｒ２１ ＝−１３，５９００
ｄｚ＋＝Ｄａ（可変）
ｒ２□ ＝、−３２，９５６９
ｄ２□ ＝ ２．３５００
ｒｚｚ ＝＝−２１，３２３５
ｄｏ３ ＝０．１５００
ｒｚ−＝−４７，５６１６
ｄｚ４ ＝１．１０００
ｒｚｓ ＝−１３７，５４８８
ｄ２！ ＝５．０００Ｏ
ｒｔｏ ＝−１６，６３３０
ｄａｍ ＝１．１０００
ｒ２ｔ ＝−２０９，０７７８
ｆ ２９．３６
Ｄ、 １．６９９
Ｄ、 １３．９６２
Ｆ、／＋ｐＨ＝０．４３５ 、
β、□ ＝２．３７６
実施例１０
ｆ＝３６．２２
〜１０２．０
ｉｌ
Ｉｘ
＝ １．８０５１８
νｚ＝２５．４３
＝ １．７４１００
ν１□＝ ５２．６８
： １．７２９１６
シ、、＝５４．６８
４８．３ ７５．１
９．０２８ ２０．０８２
５．７１６ ０．２５０
Ｖ）＋ｚｗ／Ｙ’ｗ ＝ １．２３
ｅ ２ ＝ １２．０３
Ｆ／４．６５〜Ｆ７６．５５
２ ω ＝６１．７’ 〜２３．９５’ｒｌ ＝ ｔ
ｏｏ、２０８８
ｄ、＝ １．４０００
（”２： ２８．３０９４
ｄ２＝ ０．６５００
ｒ３＝ ２７．７６６９
ｄ、＝ ３．４０００
ｒ４＝ ８９．００９２
ｄ、＝ ０．２０００
ｒ、” ２８．３９３０
ｄ５＝ ３．８０００
ｒ、＝−４２６，２７４６
ｄ、＝Ｄ、（可変）
「、＝−１９，８０６５
ｄ、＝ １．４０００
ｒ、、’：３０．７１９１
ｄ、＝ ０．５５００
ｒ＋＋ ＝ ３２．００７３
０２＝１．６０：（Ｏｎ
ｎ、＝ １．８３４００
ｎ４ ：１．７９５００
ｎｚ”１．５５９６３
ｄ、＝ ２．５０００
ｎｓ” １．８０５１８
ｒ＋ｏ ＝−７６，３１９３
ｌｌ
ν皿
＝３７．１６
シｘ ”６５．４８
ν、 ＝６１．１７
シ、 ＝４５．２９
νｓ”２５．４３
１ｚ
ｒ＋ｓ
ｒ＋４
Ｉｓ
１ｇ
ｒ＋ｔ
ｒ＋ａ
ｙｅ
ｒａ。2ω=72.8@〜32. l' 63.2 102.7 12.560 17.590 9.830 2.820 F+ 2w/Fw = 1.332 e 2 = IO,8s2 n+z = 1.72916 U+z= 54.
68n+x = 1.72916 ν11= 54
．． 68F/4.62 ~ F76.55 r+ = 85.9422 d, = 1.4000 rt = 27.5784 d, = 0.6500 rz = 27.5225 d, = 4.1000 r4: 107.2895 d, = 0.2000 rs=32.6753 d5= 4.2000 ra"-352,2657 d,=D,(variable) rt=-18,2062 dy=1.400O r,l=28.7159 da=o,5500 re =43.3677 d, =2.500O r,, =-54,1439 d+o =0-5000 n, = 1.83400 n 2 = 1, 60300 Q3 = 1.55963 Q4 = 1.79500 Q, = 1 .80518 = 37.16 = 65.48 = 61.17 = 45.29 = 25.43 r, = -61,6568 d, = 1.4000 n5 = 1.69100 "1
□ = -73,5293 dl□ = 1.00 openings Or r1yu = oo (aperture) dl3 = 1.0000 r, 4 = -138,0629 dl4 = 2.2500 r+y = 1.59270
r, s = -17,0525 d,, =0.2000 r+a =43.9728 d,, ” 2.5000 na = 1.7128
5ray =-33,7692 d,, =0.8500 r+ll =-13,9493 d,, ” 1.250on, = 1.740
00r, -= 33.0554 dl9 = 0.3500 rho = 36.6402 d2゜ = 3.2500 mouth. = 1.60
300 Shiro = 54.84 νt = 35.29 ν8 = 43.19 ν, = 28.29 ν1° = 65.48 r21 = -13,5900 dz+=Da (variable) r2□ =, -32,9569 d2□ = 2.3500 rzz ==-21,3235 do3 =0.1500 rz-=-47,5616 dz4 =1.1000 rzs =-137,5488 d2! =5.000O rto =-16,6330 dam =1.1000 r2t =-209,0778 f 29.36 D, 1.699 D, 13.962 F, /+pH=0.435, β, □ =2. 376 Example 10 f = 36.22 ~ 102.0 il Ix = 1.80518 νz = 25.43 = 1.74100 ν1□ = 52.68 : 1.72916 , , = 54.68 48.3 75. 1 9.028 20.082 5.716 0.250 V) + zw/Y'w = 1.23 e 2 = 12.03 F/4.65 ~ F76.55 2 ω = 61.7' ~ 23.95 'rl = t
oo, 2088 d, = 1.4000 ("2: 28.3094 d2 = 0.6500 r3 = 27.7669 d, = 3.4000 r4 = 89.0092 d, = 0.2000 r," 28.3930 d5 = 3.8000 r, = -426,2746 d, = D, (variable) ", = -19,8065 d, = 1.4000 r,, ': 30.7191 d, = 0.5500 r++ = 32. 0073 02=1.60: (On n, = 1.83400 n4 :1.79500 nz"1.55963 d,=2.5000 ns" 1.80518 r+o =-76,3193 ll ν plate=37.16 s x ”65.48 ν, =61.17 shi, =45.29 νs”25.43 1z r+s r+4 Is 1g r+t r+a ye ra.
ｄｌ。 ＝０．５０００ ＝−１０６，８２０７ ｄ＋＋＝１．４０００ ＝−３０２，６５０２ ｄ１□ ＝ １．００００ 二〇〇（絞り） ｄＩａ＝１．００００ ＝−８８，６６２９ ｄ、、 ＝２．２５００ ＝−１７，５５８８ ｄｌｓ ＝０．２０００ ＝ ４３．３７０９ ｄ、、 ＝２．５０００ ＝ −３９，４８７７ １Ｌｔ ＝０．８５００ ＝−１４，７４５６ ｄｌ、 ＝１．２５００ ；３４．６４５１ ｄ、９ ＝０．３５００ ＝ ４０．２６６７ ｎａ＝１．６９１００ シロ ｎ、＝ １．５９２７０ νフ ロ、＝ １．７１２８５ νＢ ｎ９＝ １．７４０００ ＝ ５４．８４ ＝ ３５．２９ ＝４３．１９ ＝２８．２９ ｄ２ｏ ＝３．２５０Ｏｎｔ。dl. =0.5000 =-106,8207 d++=1.4000 =-302,6502 d1□ = 1.0000 200 (aperture) dIa=1.0000 =-88,6629 d,, =2.2500 =-17,5588 dls = 0.2000 = 43.3709 d,, =2.5000 = −39,4877 1Lt = 0.8500 =-14,7456 dl, = 1.2500 ;34.6451 d, 9 = 0.3500 = 40.2667 na=1.69100 Shiro n, = 1.59270 νfu B, = 1.71285 νB n9= 1.74000 = 54.84 = 35.29 =43.19 =28.29 d2o = 3.250 Ont.
ｒｔｌ ＝−１４，７０３９
ｄａ＋＝Ｄａ（可変）
ｒ、、 ＝−２５，６４１９
ｄ２ｗ ＝２．９５０Ｏｎ＋＋
ｒ、、 ＝−１８，３４６６
＝＝ １．６０３００ ν、。〜６５．４８＝ １
．８０５１８ ν１ｌ＝２５．４３ｄｚｉ ＝０．
３０００
ｒｔ４ ＝−２８，５９６８
ｄ、、 ＝１．５００Ｏ
ｒ、５ ＝−３８，０２８５
ｄ２． ＝３．１０００
ｒｚａ ＝−１８，０６０２
ｄ２ａ ＝１．３０００
ｒｚｔ ＝−１１８６６，４７６４
ｆ ３６．２２
ｎ＋ ２．６０７
０２ １６．７９２
Ｆｌ／！ｗ ＝０．５５０６ 、
βａｖ＝２．９２
実施例１１
ｎ＋２
＝ １．７３４００
シ、、＝５１．４９
ｎｅｏ
＝ １．７２９１６
シ＋３＝５４．６８
６０．６ １０２．０
１３．３９９ １８゜４４０
７．５０７ ０．４７２
Ｆ＋ｚｗ／Ｆｗ＝ １．３０３
ｅ 、 ＝、１１．６４２
ｆ ＝ ３０．２８ 〜７７．８
２ω＝ ７１．１’ 〜３１．ｌ’
ｒ＋＝２１３．８６６０
ｄ＋＝１．４０００
［、＝ ２３．８０２０
ｄ、＝ ０．６４４０
ｒｉ＝２４．３６８０
ｄ、＝ ４．９２５０
ｒ、＝ １３８．７４８０
ｄ、＝ ０．２０２０
ｒｓ＝３３．２５００
ｄ、＝ ４．８０００
ｊ６＝−９７，１７２０
ｄ、＝Ｄ、（可変）
ｒ ？ ＝ −１８、４４１０
ｄ、＝ １．４０００
ｒ、＝ ２９．９３３０
ｄｓ＝ ０．５５００
ｒ、： ２７．８４２０
ｄ＋＝ ２．５０００
ｊ１２＝ １．６０３００
ｎ＋＝１．８３４００
Ｑ３＝ １．５６０１３
ｊ１４＝ １．７９５００
ｎｓ＝ １．８０５１８
Ｆ／４．６５〜Ｆ／６．４
〜３７．１６
〜６５．４８
＝ ４６．９９
＝ ４５．２９
＝ ２５．４３
ｒ＋。rtl =-14,7039 da+=Da (variable) r,, =-25,6419 d2w =2.950On++ r,, =-18,3466 == 1.60300 ν,. ~65.48= 1
．． 80518 ν1l=25.43dzi=0.
3000 rt4 =-28,5968 d,, =1.500O r, 5 =-38,0285 d2. =3.1000 rza =-18,0602 d2a =1.3000 rzt =-11866,4764 f 36.22 n+ 2.607 02 16.792 Fl/! w = 0.5506, βav = 2.92 Example 11 n+2 = 1.73400 shi, , = 51.49 neo = 1.72916 shi+3 = 54.68 60.6 102.0 13.399 18°440 7 .507 0.472 F+zw/Fw= 1.303 e, =, 11.642 f = 30.28 ~77.8 2ω= 71.1' ~31. l' r+=213.8660 d+=1.4000 [,=23.8020 d,=0.6440 ri=24.3680 d,=4.9250 r,=138.7480 d,=0.2020 rs=33 .2500 d, = 4.8000 j6 = -97,1720 d, = D, (variable) r? = -18,4410 d, = 1.4000 r, = 29.9330 ds= 0.5500 r, : 27.8420 d+= 2.5000 j12= 1.60300 n+=1.83400 Q3= 1.56013 j14= 1.79500 ns = 1.80518 F/4.65 ~ F/6.4 ~ 37.16 ~ 65.48 = 46.99 = 45.29 = 25.43 r+.
「１２
ｒ＋ｓ
ｒ＋ｔ
「１６
ｒ＋ｅ
＝ −７４，０８００
ｄ、。 ＝ ０．４９７０
＝ −７１，０２８０
ｄｚ ＝１．４０００ ｎａ＝１．６９６８０＝
−７５，０８２０
ｄ、、 ＝１．００００
＝ｏｏ（絞り）
ｄｌ３ ＝１．００００
＝ −８９，７６６０（非球面）
ｄｌ４ ＝２．２５００ ｎミニ１．５９２７０＝
−１８，５６７０
ｄｌ、ｔ ＝０．２０００
＝ ４８．１４００
ｄ、、 ＝ ２．５０００ ｊ１８： １．７１
２８５＝ −２８，８６２０
ｄ、、 ＝０．８８３０
＝ −１２，９０００
ｄｌａ ＝ １．２５００ ｎｓ＝ １．７４０
７７＝ ３０．６９５０
ｄ、、 ＝０．３５４０
ν６
νフ
ν８
ν９
＝ ５６．４９
〜３５．２９
＝ ４３．１９
＝ ２７．７９
「２゜ 〜３４．４１１０
ｄａｏ ＝ ３．２５０Ｏｎｅｏ ＝ １．６０３
００ １／１ｏ＝ ６５．４８ｒ、、 ＝−１３，２
５００
ｄｚ＋＝Ｄｚ（可変）
ｒ、、 ＝−：１１．７３１０
ｄ２． ＝ ２．３５０Ｏｎ＋ ＋ ＝ １．８０
５１８ ｖＩ＋ ＝ ２５．４３ｒ２ｓ ＝−２
０，０９３０
ｄ２３ ＝０．１５００
ｒ、、 ＝−３５，３１５０
ｄｌ４ ＝ １．１４００ ｎｅｏ ＝ １．７３
５００ １７＋□＝ ４９．８２ｒｇｓ ＝−４０，
９１１０
（ｌａｇ ＝４．０６００
ｒｉｓ ＝−１５，１７９０（非球面）ｄ、、 ＝１
．１００Ｏｎ、１＝ １．７２９１６ １７，３＝ ５
４．６８ｒｚｔ ＝ ６４１．４９４０
非球面係数
（第１４面）
Ａ、、＝−０，４１７１４ｘ １０−’ 、 Ｂ＋、＝
０．４２１６７ Ｘ １０−’Ｃ，４＝０．９２１３０
ｘ １０−’ 、 Ｄ、、＝０．１７５１７
ｘ １０−１゜（第２６面）
Ａｚ６＝０．８３６８４ Ｘ １０−５ 、 Ｂ２
６＝０．７４５３０ Ｘ １０−’Ｃ２，＝−０，４
１４３０ｘｌＯ−’ Ｄ２８＝０．３２４１６Ｘ
ｌＯ−”ｆ ３０．２８ ４９．１
７７．８Ｄ、 １．８３０
９．３１０ １８．８５０Ｄ２ １４．０
６０ ５．８５０ ０．２５０’／）、／
ＦＷ＝０．３９２ 、 ’ｌ”＋２ｗＩＰＷ＝ １．
２５７β３． ”２．６１ 、 ｅ ２
＝１３．１９７ただしｒｌ、 ｒ２．・・・はレンズ
各面の曲率半径、ｄ１ｄ２．・・・は各レンズの肉厚お
よびレンズ間隔、ｎ１ｎ２．・・・は各レンズの屈折率
、シ３．シ２．・・・は各レンズのアツベ数である。"12 r+s r+t "16 r+e = -74,0800 d,. = 0.4970 = -71,0280 dz =1.4000 na=1.69680=
-75,0820 d,, =1.0000 =oo (aperture) dl3 =1.0000 = -89,7660 (aspherical surface) dl4 =2.2500 n mini 1.59270=
-18,5670 dl, t = 0.2000 = 48.1400 d,, = 2.5000 j18: 1.71
285 = -28,8620 d,, =0.8830 = -12,9000 dla = 1.2500 ns = 1.740
77 = 30.6950 d,, =0.3540 ν6 νfu ν8 ν9 = 56.49 ~ 35.29 = 43.19 = 27.79 "2° ~ 34.4110 dao = 3.250 Oneo = 1.603
00 1/1o=65.48r,, =-13,2
500 dz+=Dz (variable) r,, =-: 11.7310 d2. = 2.350On+ + = 1.80
518 vI+ = 25.43r2s =-2
0,0930 d23 =0.1500 r,, =-35,3150 dl4 = 1.1400 neo = 1.73
500 17+□= 49.82rgs =-40,
9110 (lag = 4.0600 ris = -15,1790 (aspherical surface) d,, = 1
．． 100On, 1= 1.72916 17,3= 5
4.68rzt = 641.4940 Aspheric coefficient (14th surface) A,, =-0,41714x 10-', B+, =
0.42167 x 10-'C,4=0.92130
x 10-', D,, = 0.17517
x 10-1° (26th surface) Az6=0.83684 x 10-5, B2
6=0.74530 X 10-'C2,=-0,4
1430xlO-' D28=0.32416X
lO-”f 30.28 49.1
77.8D, 1.830
9.310 18.850D2 14.0
60 5.850 0.250'/),/
FW=0.392, 'l''+2wIPW=1.
257β3. ”2.61, e 2
=13.197 However, rl, r2. ... is the radius of curvature of each lens surface, d1d2. ... is the thickness of each lens and the lens interval, n1n2. ... is the refractive index of each lens, and C3. C2. ... is the Atsube number of each lens.
実施例１および実施例２は第１図に示すレンズ構成で、
広角端が画角６２°稈度を含むものである。Example 1 and Example 2 have the lens configuration shown in FIG.
The wide-angle end includes an angle of view of 62 degrees.
実施例１の広角端、中間焦点距離、望遠端における収差
状況は夫々第５図、第６図、第７図に示す通りであり又
実施例２の広角端、中間焦点距離、望遠端における収差
状況は夫々第８図、第９図、第１０図に示す通りである
。これら収差曲線図より明らかなように極めて良好な光
学性能を有している。又像点分布の径も、その波長ごと
に小さくなっている６
実施例３乃至実施例６も第１図に示すレンズ構成で広角
端の画角５８°程度から望遠端の画角１８゜程度まで包
括するものである。これら実施例は、全長が短いばかり
か、レンズの外径が小で携帯に便利な構成である。The aberrations at the wide-angle end, intermediate focal length, and telephoto end of Example 1 are as shown in FIGS. 5, 6, and 7, respectively, and the aberrations at the wide-angle end, intermediate focal length, and telephoto end of Example 2 are as shown in FIGS. The situation is as shown in FIGS. 8, 9, and 10, respectively. As is clear from these aberration curve diagrams, it has extremely good optical performance. The diameter of the image point distribution also decreases with each wavelength.6 In Examples 3 to 6, the angle of view at the wide-angle end is about 58° and the angle of view at the telephoto end is about 18° with the lens configuration shown in Figure 1. It is comprehensive. These embodiments have not only a short overall length but also a small outer diameter of the lens, making them convenient to carry.
実施例３の広角端、中間焦点距離、望遠端における収差
状況は夫々第１１図、第１２図、第１３図に、実施例４
の広角端、中間焦点距離、望遠端における収差状況は夫
々第１４図、第１５図、第１６図に、実施例５の広角端
、中間焦点距離、望遠端における収差状況は夫々第１７
図、第１８図第１９図に、実施例６の広角端、中間焦点
距離望遠端における収差状況は夫々第２０図、第２１図
、第２２図に示す通りである。The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of Example 3 are shown in FIGS. 11, 12, and 13, respectively.
The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of Example 5 are shown in FIGS. 14, 15, and 16, respectively, and the aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of Example 5 are shown in FIG.
18 and 19, and the aberration conditions at the wide-angle end and intermediate focal length telephoto end of Example 6 are as shown in FIGS. 20, 21, and 22, respectively.
実施例７は第２図に示すレンズ構成で広角端のが画角が
５８°程度で、口径比が大であり広角側で明るいレンズ
系を構成している。この実施例は、開口絞りの径を一定
にし絞り機構の簡単化を図ったもので、−力先学性能も
良好になっている。Example 7 has a lens configuration shown in FIG. 2, with an angle of view of about 58 degrees at the wide-angle end, a large aperture ratio, and a bright lens system at the wide-angle end. In this embodiment, the diameter of the aperture diaphragm is kept constant, the diaphragm mechanism is simplified, and the power-ahead performance is also improved.
この実施例の広角端、中間焦点距離、望遠端における収
差状況は夫々第２３図、第２４図、第２５図に示す通り
である。The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of this embodiment are as shown in FIGS. 23, 24, and 25, respectively.
以上の各実施例は、変倍率が高く結像性能が良好である
ことが特徴である。条件（３）に示す第３レンズ群の横
倍率が高く、像面に対する縦倍率の寄与が大きいことも
特徴であり、製造上重要である。又第３レンズ群の偏芯
感度の効きが比較的小さく、これも大きな長所になって
いる。更に条件（１）にて示す第ルンズ群の屈折力か弱
（なっていて３〜４の変倍率であるにもかかわらず、結
像性能が極めて良好で、望遠端の望遠比に無理がないこ
とも特徴の−っである。Each of the above embodiments is characterized by a high magnification ratio and good imaging performance. Another feature is that the third lens group shown in condition (3) has a high lateral magnification and a large contribution of the vertical magnification to the image plane, which is important in terms of manufacturing. Furthermore, the effect of eccentricity sensitivity of the third lens group is relatively small, which is also a great advantage. Furthermore, although the refractive power of the lens group shown in condition (1) is weak (and the magnification ratio is 3 to 4), the imaging performance is extremely good, and the telephoto ratio at the telephoto end is reasonable. This is also a characteristic feature.
実施例８は、第３図に示すレンズ構成で、非常に小型で
結像性能は良好である。Example 8 has a lens configuration shown in FIG. 3, which is very small and has good imaging performance.
この実施例の広角端、中間焦点距離、望遠端における収
差状況は、夫々第２６図、第２７図、第２８図に示す通
りである。The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of this example are as shown in FIGS. 26, 27, and 28, respectively.
実施例９および実施例１１も第３図に示すレンズ構成で
、広角端での画角が７３°程度で、この種のズームレン
ズとしては最も広角である。実施例９の広角端、中間焦
点距離、望遠端の収差状況は、夫々第２９図、第３０図
、第３１図に又実施例１１の広角端、中間焦点距離、望
遠端の収差状況は夫々第３５図、第３６図、第３７図に
示す通りである。Examples 9 and 11 also have the lens configuration shown in FIG. 3, and the angle of view at the wide-angle end is about 73°, which is the widest angle for this type of zoom lens. The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of Example 9 are shown in FIGS. 29, 30, and 31, respectively, and the aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of Example 11 are shown, respectively. As shown in FIGS. 35, 36, and 37.
実施例１０は第３図に示すレンズ構成で広角端での画角
が６２°程度で、変倍率が３程度の高変倍率ズームレン
ズであり、小型化と結像性能に特徴がある。この実施例
の広角端、中間焦点距離、望遠端の収差状況は、夫々第
３２図、第３３図、第３４図に示す通りである。Embodiment 10 is a high zoom lens with a lens configuration shown in FIG. 3, an angle of view of about 62 degrees at the wide-angle end, and a variable magnification of about 3, and is characterized by its compact size and imaging performance. The aberration conditions at the wide-angle end, intermediate focal length, and telephoto end of this example are as shown in FIGS. 32, 33, and 34, respectively.
これら実施例９〜１１はいずれも広角端でも軸上間隔を
詰めてあり全系の全長を短くしレンズ外径を縮小してレ
ンズ系を大幅に小型化している。In all of these Examples 9 to 11, the axial spacing is narrowed even at the wide-angle end, the overall length of the entire system is shortened, and the outer diameter of the lens is reduced, thereby significantly reducing the size of the lens system.
尚以上の実施例は、いずれも夫々第ルンズ群第２レンズ
群、第３レンズ群に強い作用を有する空気レンズが設け
られており収差補正上からは高次の収差発生面となり多
くの自由度を与えながら微妙な収差バランスを達成する
ようにしている。In each of the above embodiments, air lenses with strong effects are provided in the second lens group and the third lens group, respectively, and from the perspective of aberration correction, they become high-order aberration generating surfaces and have many degrees of freedom. The aim is to achieve a delicate balance of aberrations while giving
本発明のレンズ系において、変倍比なより大きくしたり
、性能を一層向上させるためには非球面を設けること・
が効果的である。即ち第ルンズ群Ｇ、又は第２レンズ群
Ｇ２に非球面を採用することによってレンズ成分の負担
を軽くし屈折力を弱めることが出来るので余裕のある設
計が可能で光学性能の向上をはかることが出来る。In the lens system of the present invention, in order to increase the variable power ratio or further improve the performance, it is necessary to provide an aspherical surface.
is effective. In other words, by adopting an aspheric surface for the lens group G or the second lens group G2, it is possible to lighten the load on the lens components and weaken the refractive power, which allows for a generous design and improves optical performance. I can do it.
非球面の形状としては、光軸方向をＸ軸に、光軸に垂直
な方向をｙ軸に採り、その面の光軸近傍での曲率半径（
基準球面の半径）をｒｍとした時、次の式にて示される
ものである。The shape of an aspheric surface is defined by taking the optical axis direction as the X axis and the direction perpendicular to the optical axis as the Y axis, and the radius of curvature of the surface near the optical axis (
When rm is the radius of the reference spherical surface, it is expressed by the following equation.
ｘｋ＝ ｙ”ｋ／（ｒｍ＋ｒ＋、Ｊ７’石−万”；Ｔ’
） ＋ Ａｋｙ’ ｋ＋Ｂ工ｙ６エ＋Ｃ＋＋３”ｍ
＋Ｄｍｙ”ただしＡ工、Ｂ、、Ｃ工、Ｄ、は非球面係
数でｋは非球面かに番目の面であることを示す。xk= y"k/(rm+r+, J7' stone - million";T'
) + Aky' k+B engineering y6e+C++3"m
+Dmy'' However, A, B, C, and D are aspherical coefficients, and k indicates the 5th surface of the aspherical surface.
［発明の効果］
本発明は、正、正、負の３群構成で、各レンズ群がズー
ミング時に移動するようにして、小型化と高変倍率化を
可能にし、さらに最適な厚肉レンズ構成によって広角端
から望遠端まで極めて良好な光学性能を有するズームレ
ンズを実現し得たものである。又第２レンズ群の構成に
特色を持たせて更に小型となし、広角端の画角が７６°
程度のレンズ系や逆に望遠端の画角が１８°程度のレン
ズ系を実現し得たものである。[Effects of the Invention] The present invention has a positive, positive, and negative three lens group configuration, and each lens group moves during zooming, which enables miniaturization and high variable magnification, and furthermore provides an optimal thick lens configuration. This makes it possible to realize a zoom lens with extremely good optical performance from the wide-angle end to the telephoto end. In addition, the second lens group has a unique structure, making it even more compact, and the angle of view at the wide-angle end is 76°.
This makes it possible to realize a lens system with an angle of view of about 18 degrees at the telephoto end, or conversely, a lens system with an angle of view of about 18 degrees at the telephoto end.
第１図は本発明の実施例１乃至実施例６の断面図、第２
図は本発明の実施例７の断面図、第３図は本発明の実施
例８乃至実施例１１の断面図、第４図は本発明の基本構
成と各群の移動状況を示す図、第５図乃至第３７図は本
発明の各実施例の収差曲線図、第３８図は従来の４群ズ
ームレンズの構成と各群の動きを示す図である。
出願人 オリンパス光学工業株式会社
代理人 向 見 −
第３
図
第４
図
第３８図
球面収差
第５図
非点収差 倍串の色収差
歪曲組着
第６
図
第９
図
第１０図
第７図
第８図
第１１図
第１２図
第１３図
第１５図
球面収差
第１４図
非点収差 倍：９一つ色収差
歪
曲収差
球面収差
第１６図
非点収差 倍率の色収差
曲収差
第１７図
第２１図
第２２図
球回収
差
第２５図
非点収差 倍率の色収差
歪曲収差
第２３図
第２４図
第２７図
第２８図
球Ｗ１収差
第２９図
ＩＦ Ｊへ収差 倍率の色収差
歪曲収差
球面収差
第３０図
１ド点収差 倍率の色収差
歪曲収差
第３３図
球面収差
第３４図
非点収差 倍率の色町ｌ差
歪曲収差
第３１図
第３２図
第３５図
第３６図
３７図
倍率の色！！２差
歪曲収差FIG. 1 is a sectional view of Examples 1 to 6 of the present invention, and FIG.
3 is a sectional view of Embodiment 7 of the present invention, FIG. 3 is a sectional view of Embodiments 8 to 11 of the present invention, FIG. 5 to 37 are aberration curve diagrams of each embodiment of the present invention, and FIG. 38 is a diagram showing the configuration of a conventional four-group zoom lens and the movement of each group. Applicant Olympus Optical Co., Ltd. Agent Mukai - Figure 3 Figure 4 Figure 38 Spherical aberration Figure 5 Astigmatism Double skewer chromatic aberration Distortion assembly Figure 9 Figure 10 Figure 7 Figure 8 Fig. 11 Fig. 12 Fig. 13 Fig. 15 Spherical aberration Fig. 14 Astigmatism Magnification: 9 One Chromatic aberration Distortion Spherical aberration Fig. 16 Astigmatism Chromatic aberration of magnification Curvature aberration Fig. 17 Fig. 21 Fig. 22 Figure Sphere Recovery Difference Figure 25 Astigmatism Lateral Chromatic Aberration Distortion Figure 23 Figure 24 Figure 27 Figure 28 Sphere W1 Aberration Figure 29 IF J Aberration Lateral Chromatic Aberration Distortion Spherical Aberration Figure 30 1 Dot Aberration Chromatic aberration Distortion of magnification Fig. 33 Spherical aberration Fig. 34 Astigmatism Color town of magnification Distortion aberration Fig. 31 Fig. 32 Fig. 35 Fig. 36 Fig. 37 Fig. Color of magnification! ! 2-difference distortion aberration
Claims (1)
力の第２レンズ群と、負の屈折力の第３レンズ群とより
構成され、各レンズ群間の各々の光軸上の間隔を変化さ
せることによって変倍を行なうレンズ系で、次の条件を
満足することを特徴とするコンパクトな高変倍率ズーム
レンズ。 （１）０．０５＜ρ＿１／ρ＿Ｗ＜０．９ （２）１．０＜ρ＿１＿２＿Ｗ／ρ＿Ｗ＜２．０（３）
２．０＜β＿３＿Ｔ＜５．０ ただしρ＿１は第１レンズ群の屈折力、ρ＿１＿２＿Ｗ
は広角端における第１レンズ群と第２レンズ群の合成の
屈折力、ρ＿Ｗは広角端における全系の屈折力、β＿３
＿Ｔは望遠端における第３レンズ群の横倍率である。[Claims] Consisting of, in order from the object side, a first lens group with positive refractive power, a second lens group with positive refractive power, and a third lens group with negative refractive power, and between each lens group A compact high-power zoom lens which is a lens system that changes magnification by changing the distance on each optical axis, and which satisfies the following conditions. (1) 0.05<ρ_1/ρ_W<0.9 (2) 1.0<ρ_1_2_W/ρ_W<2.0(3)
2.0<β_3_T<5.0 where ρ_1 is the refractive power of the first lens group, ρ_1_2_W
is the combined refractive power of the first lens group and the second lens group at the wide-angle end, ρ_W is the refractive power of the entire system at the wide-angle end, β_3
_T is the lateral magnification of the third lens group at the telephoto end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287806A JP2903473B2 (en) | 1988-11-16 | 1988-11-16 | Compact high-magnification zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63287806A JP2903473B2 (en) | 1988-11-16 | 1988-11-16 | Compact high-magnification zoom lens |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7315793A Division JP3032955B2 (en) | 1995-11-10 | 1995-11-10 | Compact high-magnification zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02135312A true JPH02135312A (en) | 1990-05-24 |
| JP2903473B2 JP2903473B2 (en) | 1999-06-07 |
Family
ID=17721995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63287806A Expired - Fee Related JP2903473B2 (en) | 1988-11-16 | 1988-11-16 | Compact high-magnification zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2903473B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02287507A (en) * | 1989-04-28 | 1990-11-27 | Asahi Optical Co Ltd | High variable magnification zoom lens for compact camera covering wide angle |
| JPH0495912A (en) * | 1990-08-07 | 1992-03-27 | Canon Inc | Zoom lens of simple constitution |
| JPH05264903A (en) * | 1991-03-04 | 1993-10-15 | Olympus Optical Co Ltd | Wide-angle zoom lens |
| US5331463A (en) * | 1991-03-04 | 1994-07-19 | Olympus Optical Co., Ltd. | Wide angle zoom lens system |
| US5483380A (en) * | 1992-10-26 | 1996-01-09 | Olympus Optical Co., Ltd. | Compact zoom lens system having high zoom ratio and wide view angle |
| JPH08179215A (en) * | 1994-12-22 | 1996-07-12 | Canon Inc | Zoom lens |
| JPH08211289A (en) * | 1995-11-10 | 1996-08-20 | Olympus Optical Co Ltd | Compact high variable magnifying power zoom lens |
| US5640276A (en) * | 1993-09-03 | 1997-06-17 | Olympus Optical Co., Ltd. | Four-unit zoom lens system having a high zoom ratio |
| US5777799A (en) * | 1995-07-21 | 1998-07-07 | Olympus Optical Co., Ltd. | Three-lens-group zoom lens system having a zoom ratio exceeding 3.5 |
| US5786944A (en) * | 1995-07-06 | 1998-07-28 | Minolta Co., Ltd. | Zoom lens system |
| KR20020049639A (en) * | 2000-12-19 | 2002-06-26 | 이계안 | Structure for sealing a side glass of bus |
| US6958866B2 (en) | 2001-06-08 | 2005-10-25 | Pentax Corporation | Zoom lens system |
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| JPS63147536A (en) * | 1986-12-11 | 1988-06-20 | Kuraray Co Ltd | Production of polyvinyl alcohol-based hydrated gel |
| JPS63161423A (en) * | 1986-12-25 | 1988-07-05 | Olympus Optical Co Ltd | Compact zoom lens with high variable power rate |
| JPS63168133A (en) * | 1987-08-20 | 1988-07-12 | 松下電器産業株式会社 | Coffee brewer |
| JPS63168132A (en) * | 1987-08-20 | 1988-07-12 | 松下電器産業株式会社 | Coffee brewer |
| JPS63225294A (en) * | 1987-03-16 | 1988-09-20 | 株式会社日立製作所 | Display driver |
-
1988
- 1988-11-16 JP JP63287806A patent/JP2903473B2/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6371226A (en) * | 1986-09-13 | 1988-03-31 | 東芝テック株式会社 | Electromotive cooker |
| JPS6380149A (en) * | 1986-09-19 | 1988-04-11 | Matsushita Seiko Co Ltd | Air conditioner |
| JPS6380148A (en) * | 1986-09-24 | 1988-04-11 | Matsushita Electric Works Ltd | Double-structure hood for discharger apparatus |
| JPS63147536A (en) * | 1986-12-11 | 1988-06-20 | Kuraray Co Ltd | Production of polyvinyl alcohol-based hydrated gel |
| JPS63161423A (en) * | 1986-12-25 | 1988-07-05 | Olympus Optical Co Ltd | Compact zoom lens with high variable power rate |
| JPS63225294A (en) * | 1987-03-16 | 1988-09-20 | 株式会社日立製作所 | Display driver |
| JPS63168133A (en) * | 1987-08-20 | 1988-07-12 | 松下電器産業株式会社 | Coffee brewer |
| JPS63168132A (en) * | 1987-08-20 | 1988-07-12 | 松下電器産業株式会社 | Coffee brewer |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02287507A (en) * | 1989-04-28 | 1990-11-27 | Asahi Optical Co Ltd | High variable magnification zoom lens for compact camera covering wide angle |
| JPH0495912A (en) * | 1990-08-07 | 1992-03-27 | Canon Inc | Zoom lens of simple constitution |
| JPH05264903A (en) * | 1991-03-04 | 1993-10-15 | Olympus Optical Co Ltd | Wide-angle zoom lens |
| US5331463A (en) * | 1991-03-04 | 1994-07-19 | Olympus Optical Co., Ltd. | Wide angle zoom lens system |
| US5483380A (en) * | 1992-10-26 | 1996-01-09 | Olympus Optical Co., Ltd. | Compact zoom lens system having high zoom ratio and wide view angle |
| US5640276A (en) * | 1993-09-03 | 1997-06-17 | Olympus Optical Co., Ltd. | Four-unit zoom lens system having a high zoom ratio |
| JPH08179215A (en) * | 1994-12-22 | 1996-07-12 | Canon Inc | Zoom lens |
| US5786944A (en) * | 1995-07-06 | 1998-07-28 | Minolta Co., Ltd. | Zoom lens system |
| US5777799A (en) * | 1995-07-21 | 1998-07-07 | Olympus Optical Co., Ltd. | Three-lens-group zoom lens system having a zoom ratio exceeding 3.5 |
| JPH08211289A (en) * | 1995-11-10 | 1996-08-20 | Olympus Optical Co Ltd | Compact high variable magnifying power zoom lens |
| KR20020049639A (en) * | 2000-12-19 | 2002-06-26 | 이계안 | Structure for sealing a side glass of bus |
| US6958866B2 (en) | 2001-06-08 | 2005-10-25 | Pentax Corporation | Zoom lens system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2903473B2 (en) | 1999-06-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |