JPS59109309U - zoom lens - Google Patents

zoom lens

Info

Publication number
JPS59109309U
JPS59109309U JP391683U JP391683U JPS59109309U JP S59109309 U JPS59109309 U JP S59109309U JP 391683 U JP391683 U JP 391683U JP 391683 U JP391683 U JP 391683U JP S59109309 U JPS59109309 U JP S59109309U
Authority
JP
Japan
Prior art keywords
lens
zoom lens
refractive power
lens group
zoom
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP391683U
Other languages
Japanese (ja)
Inventor
杉浦　宗治
辻　定彦
浅野　俊昭
Original Assignee
キヤノン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by キヤノン株式会社 filed Critical キヤノン株式会社
Priority to JP391683U priority Critical patent/JPS59109309U/en
Publication of JPS59109309U publication Critical patent/JPS59109309U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図は本考案の数値実施例のレンズ断面図、第２図Ａ
、　Ｂ、　Ｃは本考案の数値実施例の広角端、中間、望
遠端のズーム位置での収差図である。図−中、Ｓはサジ
タル像面、Ｍはメリデイオナル像面である。Figure 1 is a cross-sectional view of a lens in a numerical embodiment of the present invention, Figure 2A
, B, and C are aberration diagrams at the wide-angle end, middle, and telephoto end zoom positions of numerical examples of the present invention. In the figure, S is the sagittal image plane and M is the meridional image plane.

Claims (3)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）複数の移動レンズ群を移動させることによってズ
ーミングを行うズームレンズにおいて、゛　　　前記複
数の移動レンズ群のうちの少なくとも１つの移動レンズ
群Ａに複数個のプラスチック材料のレンズを設け、 温度変化による焦点距離の変化を該移動レンズＷｆ’Ａ
内のプラスチック材料のレンズにより補正するような形
状で構成したことを特徴とするズームレンズ(1) In a zoom lens that performs zooming by moving a plurality of movable lens groups, at least one movable lens group A of the plurality of movable lens groups is provided with a plurality of lenses made of plastic material, and the temperature changes. The change in focal length due to the moving lens Wf'A
A zoom lens characterized in that it is constructed in such a shape that it is corrected by a lens made of plastic material inside. （２）前記複数個のプラスチック材料のレンズを正レン
ズと負レンズで構成したことを特徴とする実用新案登録
請求の範囲第１項記載のズームレンズ。(2) The zoom lens according to claim 1, wherein the plurality of lenses made of plastic material are composed of a positive lens and a negative lens. （３）　　前記ズームレンズを物体側より順に正の屈折
力を有する第１レンズ群、負の屈折力を有する第■レン
ズ群、正の屈折力を有する第■レンズ群、そして正の屈
折力を有する第■レンズ群より構成し、 前記第■、第■、第■レンズ群を移動させてズーミング
を行うことを特徴とした実用新案登録請求の範囲第１項
記載のズームレンズ。(3) The zoom lens includes, in order from the object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, a second lens group having a positive refractive power, and a second lens group having a positive refractive power. The zoom lens according to claim 1, characterized in that the zoom lens is constituted by a (2) lens group having the following features, and zooming is performed by moving the (1), (2), and (2) lens groups.
JP391683U 1983-01-13 1983-01-13 zoom lens Pending JPS59109309U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP391683U JPS59109309U (en) 1983-01-13 1983-01-13 zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP391683U JPS59109309U (en) 1983-01-13 1983-01-13 zoom lens

Publications (1)

Publication Number Publication Date
JPS59109309U true JPS59109309U (en) 1984-07-23

Family

ID=30135523

Family Applications (1)

Application Number Title Priority Date Filing Date
JP391683U Pending JPS59109309U (en) 1983-01-13 1983-01-13 zoom lens

Country Status (1)

Country Link
JP (1) JPS59109309U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143518A (en) * 1979-04-27 1980-11-08 Nippon Kogaku Kk <Nikon> Lens system
JPS576820A (en) * 1980-06-17 1982-01-13 Canon Inc Optical system for copying having temperature compensating lens

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55143518A (en) * 1979-04-27 1980-11-08 Nippon Kogaku Kk <Nikon> Lens system
JPS576820A (en) * 1980-06-17 1982-01-13 Canon Inc Optical system for copying having temperature compensating lens

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