JPS6014213A - Zoom lens of high variable power including wide view angle - Google Patents

Zoom lens of high variable power including wide view angle

Info

Publication number
JPS6014213A
JPS6014213A JP12285683A JP12285683A JPS6014213A JP S6014213 A JPS6014213 A JP S6014213A JP 12285683 A JP12285683 A JP 12285683A JP 12285683 A JP12285683 A JP 12285683A JP S6014213 A JPS6014213 A JP S6014213A
Authority
JP
Japan
Prior art keywords
lens group
lens
focal distance
zoom lens
object side
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
Application number
JP12285683A
Other versions
JPH0533367B2 (en
Inventor
Tomotou Takahashi
Original Assignee
Nippon Kogaku Kk <Nikon>
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 Nippon Kogaku Kk <Nikon> filed Critical Nippon Kogaku Kk <Nikon>
Priority to JP58122856A priority Critical patent/JPH0533367B2/ja
Priority claimed from US06/626,989 external-priority patent/US4632519A/en
Publication of JPS6014213A publication Critical patent/JPS6014213A/en
Publication of JPH0533367B2 publication Critical patent/JPH0533367B2/ja
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B15/00Optical objectives with means for varying the magnification
    • G02B15/14Optical 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
    • G02B15/16Optical 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
    • G02B15/163Optical 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
    • G02B15/167Optical 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
    • G02B15/173Optical 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 +-+

Abstract

PURPOSE:To realize a zoom lens of a small size which has a high magnification containing a wide view angle by constituting so that the whole lens system of four lens groups can move, and also a specific condition is satisfied with regard to a focal distance of the first lens group and a focal distance of the second lens group. CONSTITUTION:When executing a zooming to a telephoto end (fT) from a wide angle end (fW), this zoom lens is constituted so that the first lens group G1 and the fourth lens group G4 move monotonously by the alsmot same quantity toward an object side, also the third lens group G3 moves monotonously toward the object side in a ratio of about 0.4-0.5 times of a movement of the first lens group G1, and simultaneously, the second lens group G2 moves toward the object side at least in the vicinity of the wide angle end. Also, the titled zoom lens which is small-sized and scarcely causes an aberration variation is obtained by constituting it so that a conditional expression I is satisfied between a focal distance f1 and a focal distance f2 of the first lens group, and making it correspond to a high variable power zoom of about 5.7 times.
JP58122856A 1983-07-06 1983-07-06 Expired - Lifetime JPH0533367B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58122856A JPH0533367B2 (en) 1983-07-06 1983-07-06

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58122856A JPH0533367B2 (en) 1983-07-06 1983-07-06
US06/626,989 US4632519A (en) 1983-07-06 1984-07-02 Zoom lens including a wide angle of view

Publications (2)

Publication Number Publication Date
JPS6014213A true JPS6014213A (en) 1985-01-24
JPH0533367B2 JPH0533367B2 (en) 1993-05-19

Family

ID=14846331

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58122856A Expired - Lifetime JPH0533367B2 (en) 1983-07-06 1983-07-06

Country Status (1)

Country Link
JP (1) JPH0533367B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61260210A (en) * 1985-05-15 1986-11-18 Olympus Optical Co Ltd Zoom lens
JPS61202720U (en) * 1985-06-07 1986-12-19
JPS624929A (en) * 1985-06-28 1987-01-10 Daikin Mfg Co Ltd Damper disc
JPS6256623A (en) * 1985-09-05 1987-03-12 Aisin Seiki Co Ltd Damper disc
US4789229A (en) * 1986-03-11 1988-12-06 Olympus Optical Co., Ltd. Zoom lens system
JPH04158326A (en) * 1990-10-22 1992-06-01 Canon Inc Zoom lens
US5694253A (en) * 1995-02-02 1997-12-02 Nikon Corporation High zoom ratio zoom lens
US5859729A (en) * 1996-01-06 1999-01-12 Canon Kabushiki Kaisha Zoom lens device with four lens unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133713A (en) * 1980-03-24 1981-10-20 Asahi Optical Co Ltd Zoom lens
JPS57161804A (en) * 1981-03-31 1982-10-05 Tokinaa Kogaku Kk Zoom lens system
JPS57169716A (en) * 1981-04-10 1982-10-19 Minolta Camera Co Ltd Zoom lens system of high variable magnification including wide angle region

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133713A (en) * 1980-03-24 1981-10-20 Asahi Optical Co Ltd Zoom lens
JPS57161804A (en) * 1981-03-31 1982-10-05 Tokinaa Kogaku Kk Zoom lens system
JPS57169716A (en) * 1981-04-10 1982-10-19 Minolta Camera Co Ltd Zoom lens system of high variable magnification including wide angle region

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61260210A (en) * 1985-05-15 1986-11-18 Olympus Optical Co Ltd Zoom lens
JPS61202720U (en) * 1985-06-07 1986-12-19
JPS624929A (en) * 1985-06-28 1987-01-10 Daikin Mfg Co Ltd Damper disc
JPH0371571B2 (en) * 1985-06-28 1991-11-13 Daikin Mfg Co Ltd
JPS6256623A (en) * 1985-09-05 1987-03-12 Aisin Seiki Co Ltd Damper disc
US4789229A (en) * 1986-03-11 1988-12-06 Olympus Optical Co., Ltd. Zoom lens system
JPH04158326A (en) * 1990-10-22 1992-06-01 Canon Inc Zoom lens
US5694253A (en) * 1995-02-02 1997-12-02 Nikon Corporation High zoom ratio zoom lens
US5859729A (en) * 1996-01-06 1999-01-12 Canon Kabushiki Kaisha Zoom lens device with four lens unit

Also Published As

Publication number Publication date
JPH0533367B2 (en) 1993-05-19

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