JPS6276313U - - Google Patents
Info
- Publication number
- JPS6276313U JPS6276313U JP1986170937U JP17093786U JPS6276313U JP S6276313 U JPS6276313 U JP S6276313U JP 1986170937 U JP1986170937 U JP 1986170937U JP 17093786 U JP17093786 U JP 17093786U JP S6276313 U JPS6276313 U JP S6276313U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- focal length
- lens group
- zoom
- entire system
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
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
- G02B15/163—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—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 first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
-
- 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
- G02B15/145—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 five groups only
- G02B15/1451—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 five groups only the first group being positive
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Description
第１図、第２図は各々本考案の実施例１、実施
例２の光学的配置とズーミングによるズーム軌跡
の説明図、第３図、第４図は各々本考案の数値実
施例１、数値実施例２のレンズ断面図、第５図、
第６図は数値実施例１の第７図、第８図は数値実
施例２の無限遠物点と像面より３ｍの近距離物点
に対する諸収差図であり、第９図、第１０図は各
々本考案の実施例３、実施例４の光学的配置とズ
ーミングによるズーム軌跡の説明図、第１１図、
第１２図は各々本考案の数値実施例３、数値実施
例４のレンズ断面図、第１３図は数値実施例３の
、第１４図は数値実施例４の無限遠物点と近距離
物点に対する諸収差図である。図中ａ，ｂ，ｃは
広角端、中間、望遠端でのズーム位置を示し、Ｍ
はメリデイオナル像面、Ｓはサジタル像面を示す
。
Figures 1 and 2 are explanatory diagrams of the optical arrangement and zoom locus by zooming in Example 1 and Example 2 of the present invention, respectively. Figures 3 and 4 are numerical values of Example 1 and Figure 4 of the present invention, respectively. A cross-sectional view of the lens of Example 2, FIG.
6 is a diagram showing various aberrations for an object point at infinity and an object point 3 m from the image plane in numerical example 2. FIG. 11 is an explanatory diagram of the optical arrangement and the zoom locus by zooming in Embodiment 3 and Embodiment 4 of the present invention, respectively.
12 is a cross-sectional view of the lens of Numerical Example 3 and Numerical Example 4 of the present invention, FIG. 13 is Numerical Example 3, and FIG. 14 is an object point at infinity and a short distance object point of Numerical Example 4. FIG. In the figure, a, b, and c indicate the zoom position at the wide-angle end, middle, and telephoto end;
indicates the meridional image plane, and S indicates the sagittal image plane.
Claims (1)
化させるために光軸上移動する少なくとも２つの
レンズ群を有するズームレンズにおいて、前記レ
ンズ群のいずれか一方若しくは両方の後方にズー
ミング操作と連動させて一体的に移動する複数個
のレンズ群よりなる複合レンズ群Ｆを配置して前
記複合レンズ群Ｆの一部のレンズ群を移動させて
フオーカシングを行うもので、前記複合レンズ群
Ｆの焦点距離をｆＦ、望遠端のズーム位置におけ
る全系の焦点距離をｆＴとするとき −１３ｆｔ＜１ｆＦ＜１３ｆｔ なる条件を満足することを特徴とするズームレン
ズ。[Claims for Utility Model Registration] A zoom lens having at least two lens groups that move along the optical axis in order to change the focal length of the entire system while keeping the image point position constant; A compound lens group F consisting of a plurality of lens groups that moves integrally in conjunction with the zooming operation is arranged behind both, and focusing is performed by moving some of the lens groups of the compound lens group F. , where the focal length of the compound lens group F is fF, and the focal length of the entire system at the telephoto end zoom position is fT, the zoom lens satisfies the following condition: -13ft<1fF<13ft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986170937U JPH0532807Y2 (en) | 1986-11-06 | 1986-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986170937U JPH0532807Y2 (en) | 1986-11-06 | 1986-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6276313U true JPS6276313U (en) | 1987-05-15 |
| JPH0532807Y2 JPH0532807Y2 (en) | 1993-08-23 |
Family
ID=31106111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986170937U Expired - Lifetime JPH0532807Y2 (en) | 1986-11-06 | 1986-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532807Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212926A (en) * | 2006-02-13 | 2007-08-23 | Sony Corp | Variable focal distance lens system and imaging apparatus |
| JP2009115874A (en) * | 2007-11-02 | 2009-05-28 | Nikon Corp | Zoom lens and optical apparatus with the zoom lens |
| JP2013125213A (en) * | 2011-12-15 | 2013-06-24 | Olympus Imaging Corp | Inner focus lens system and imaging apparatus with the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532037A (en) * | 1978-08-29 | 1980-03-06 | Nippon Kogaku Kk <Nikon> | Zoom lens system for near distance |
-
1986
- 1986-11-06 JP JP1986170937U patent/JPH0532807Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5532037A (en) * | 1978-08-29 | 1980-03-06 | Nippon Kogaku Kk <Nikon> | Zoom lens system for near distance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212926A (en) * | 2006-02-13 | 2007-08-23 | Sony Corp | Variable focal distance lens system and imaging apparatus |
| JP2009115874A (en) * | 2007-11-02 | 2009-05-28 | Nikon Corp | Zoom lens and optical apparatus with the zoom lens |
| JP2013125213A (en) * | 2011-12-15 | 2013-06-24 | Olympus Imaging Corp | Inner focus lens system and imaging apparatus with the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0532807Y2 (en) | 1993-08-23 |
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