JPS56128911A - Subminiature zoom lens - Google Patents

Subminiature zoom lens

Info

Publication number
JPS56128911A
JPS56128911A JP3252480A JP3252480A JPS56128911A JP S56128911 A JPS56128911 A JP S56128911A JP 3252480 A JP3252480 A JP 3252480A JP 3252480 A JP3252480 A JP 3252480A JP S56128911 A JPS56128911 A JP S56128911A
Authority
JP
Japan
Prior art keywords
lens
lens group
1st
2nd
whole 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
Application number
JP3252480A
Inventor
Akira Tajima
Kazuo Tanaka
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP3252480A priority Critical patent/JPS56128911A/en
Publication of JPS56128911A publication Critical patent/JPS56128911A/en
Priority claimed from US06/699,026 external-priority patent/US4682860A/en
Application status is Granted 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
    • 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
    • G02B15/142Optical 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 two groups only

Abstract

PURPOSE: To miniaturize the whole system by providing the 1st lens group of at least ≥2 positive lens and ≥1 negative lens, and the 2nd lens group of at least positive lens and negative lens successively from the object side so that their air interval is variable.
CONSTITUTION: From the object side, the 1st positive lens group has at least ≥2 positive lenses and at least ≥1, negative lens, and the 2nd negative lens group has at least one positive lens and at least one negative lens; and air interval D10 between the 1st and 2nd lens group is variable for zooming. Since the 1st lens group and 2nd group are arranged successively, the main plane position at the rear side of the whole system is closer to the object side than the 1st lens group, so the back focus is made much shorter than the focal length of the whole system and the final lens of the 2nd lens group becomes closer to film surface 3, so that whole system is miniaturized. Further, various aberrations are eliminated excellently.
COPYRIGHT: (C)1981,JPO&Japio
JP3252480A 1980-03-14 1980-03-14 Subminiature zoom lens Granted JPS56128911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3252480A JPS56128911A (en) 1980-03-14 1980-03-14 Subminiature zoom lens

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3252480A JPS56128911A (en) 1980-03-14 1980-03-14 Subminiature zoom lens
DE3109462A DE3109462C2 (en) 1980-03-14 1981-03-12 Photographic zoom lens
US06/699,026 US4682860A (en) 1980-03-14 1985-02-07 Ultrasmall size zoom lens

Publications (1)

Publication Number Publication Date
JPS56128911A true JPS56128911A (en) 1981-10-08

Family

ID=12361341

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3252480A Granted JPS56128911A (en) 1980-03-14 1980-03-14 Subminiature zoom lens

Country Status (2)

Country Link
JP (1) JPS56128911A (en)
DE (1) DE3109462C2 (en)

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5744115A (en) * 1980-08-30 1982-03-12 Asahi Optical Co Ltd Reflex telephoto zoom lens system
JPS57200537U (en) * 1981-06-13 1982-12-20
JPS60263113A (en) * 1984-06-11 1985-12-26 Canon Inc Small-sized zoom lens
JPS61148414A (en) * 1984-12-21 1986-07-07 Canon Inc Compact zoom lens
JPS6239811A (en) * 1985-08-14 1987-02-20 Asahi Optical Co Ltd Copying use variable power lens
US4653870A (en) * 1984-03-07 1987-03-31 Olympus Optical Co., Ltd. Compact vari-focal photographic lens system
JPS62138817A (en) * 1985-12-12 1987-06-22 Canon Inc Small-sized zoom lens
DE3702351A1 (en) * 1986-01-28 1987-07-30 Canon Kk Zoom lens with a lens member of veraenderlicher Vergroesserung
US4701033A (en) * 1983-09-09 1987-10-20 Minolta Camera Kabushiki Kaisha Variable focal length lens system
JPS62251710A (en) * 1986-04-25 1987-11-02 Olympus Optical Co Ltd Compact zoom lens
JPS62264019A (en) * 1985-11-28 1987-11-17 Asahi Optical Co Ltd Zoom lens for compact camera
JPS63311224A (en) * 1987-06-12 1988-12-20 Olympus Optical Co Ltd Compact zoom lens
US4822152A (en) * 1986-08-11 1989-04-18 Olympus Optical Co., Ltd. Compact high-vari-focal ratio zoom lens system
DE3902495A1 (en) * 1988-01-29 1989-08-10 Asahi Optical Co Ltd Zoom lens system for the use in a compact camera
DE3909755A1 (en) * 1988-03-25 1989-10-05 Asahi Optical Co Ltd Zoom-lens-system with a high zoom ratio camera compact-in to use
JPH026917A (en) * 1988-04-15 1990-01-11 Konica Corp Small-sized variable focal length lens
DE3930032A1 (en) * 1988-09-08 1990-03-15 Asahi Optical Co Ltd Zoom lens system with a high brennweitenverhaeltnis for use in a compact camera
US4911539A (en) * 1987-12-24 1990-03-27 Nikon Corporation Micro zoom lens
JPH02120714A (en) * 1988-10-31 1990-05-08 Canon Inc Zoom lens of small size
JPH02190812A (en) * 1989-01-20 1990-07-26 Canon Inc Two-group zoom lens
US5002373A (en) * 1988-02-10 1991-03-26 Olympus Optical Co., Ltd. Zoom lens system of inner focus type
DE4030757A1 (en) * 1989-09-29 1991-04-18 Asahi Optical Co Ltd Zoom lens system for the use of a compact camera
JPH0396911A (en) * 1989-09-08 1991-04-22 Agency Of Ind Science & Technol Systematic generating method for equivalent optical system
DE4033293A1 (en) * 1989-10-19 1991-04-25 Asahi Optical Co Ltd Zoom lens system for compact camera - consists of two groups of lens with mechanism to vary distance between groups
DE4037213A1 (en) * 1989-11-21 1991-06-13 Asahi Optical Co Ltd Zoom lens system for use in a compact camera with a wide angle detection range
DE4139431A1 (en) * 1990-11-30 1992-06-04 Asahi Optical Co Ltd Zoom lens system
US5162947A (en) * 1989-10-19 1992-11-10 Asahi Kogaku Kogyo K.K. Zoom lens system for use with a compact camera having a wide coverage of angles
US5267084A (en) * 1991-07-24 1993-11-30 Olympus Optical Co., Ltd. Compact, fast zoom lens system
US5283693A (en) * 1990-06-13 1994-02-01 Minolta Camera Kabushiki Kaisha Compact zoom lens system
US5327290A (en) * 1989-10-13 1994-07-05 Minolta Camera Kabushiki Kaisha Compact size zoom lens system
US5381270A (en) * 1992-06-22 1995-01-10 Fuji Photo Film Co., Ltd. Compact zoom lens system
US5418647A (en) * 1992-01-14 1995-05-23 Konica Corporation Compact zoom lens for use in a lens shutter camera
DE4042543C2 (en) * 1989-11-21 1995-07-20 Asahi Optical Co Ltd Compact camera zoom lens system
DE3943741C2 (en) * 1988-09-08 1996-02-22 Asahi Optical Co Ltd Zoom objective lens with wide range focal length
DE4042554C2 (en) * 1989-09-29 1996-12-19 Asahi Optical Co Ltd Camera zoom lens system
US5757556A (en) * 1995-05-10 1998-05-26 Canon Kabushiki Kaisha Zoom lens
US5798873A (en) * 1993-11-25 1998-08-25 Canon Kabushiki Kaisha Small-sized zoom lens
US5815320A (en) * 1993-01-14 1998-09-29 Canon Kabushiki Kaisha Zoom lens
US6215600B1 (en) 1997-09-30 2001-04-10 Canon Kabushiki Kaisha Zoom lens
US6219190B1 (en) 1998-11-06 2001-04-17 Canon Kabushiki Kaisha Zoom lens
US6384986B1 (en) 1999-02-02 2002-05-07 Canon Kabushiki Kaisha Zoom lens and optical apparatus having the same
US6577452B2 (en) 2001-01-31 2003-06-10 Nikon Corporation Variable focal length lens system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5382432A (en) * 1976-12-28 1978-07-20 Canon Inc Small zoom lens

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1017812B (en) * 1955-04-26 1957-10-17 Agfa Camera Werk Ag A photographic telephoto lens
US3170984A (en) * 1961-05-29 1965-02-23 Bausch & Lomb Zoom optical system
JPS4923912B1 (en) * 1970-12-15 1974-06-19
CH559531A5 (en) * 1973-04-19 1975-03-14 Vogt Franz Voko Bueromoebelfab
JPS521537A (en) * 1975-06-23 1977-01-07 Nippon Steel Corp Series cascade type combustion controlled apparatus
JPS531037A (en) * 1976-06-25 1978-01-07 Toray Industries Light deflector
JPS6046688B2 (en) * 1976-11-11 1985-10-17 Fuji Photo Optical Co Ltd
JPS6039204B2 (en) * 1976-11-12 1985-09-05 Minolta Camera Kk
JPS56917A (en) * 1979-06-14 1981-01-08 Katsuro Hayashi Step stoker with chain grate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5382432A (en) * 1976-12-28 1978-07-20 Canon Inc Small zoom lens

Cited By (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6252842B2 (en) * 1980-08-30 1987-11-07 Asahi Optical Co Ltd
JPS5744115A (en) * 1980-08-30 1982-03-12 Asahi Optical Co Ltd Reflex telephoto zoom lens system
JPS57200537U (en) * 1981-06-13 1982-12-20
US4701033A (en) * 1983-09-09 1987-10-20 Minolta Camera Kabushiki Kaisha Variable focal length lens system
US4653870A (en) * 1984-03-07 1987-03-31 Olympus Optical Co., Ltd. Compact vari-focal photographic lens system
JPS6361641B2 (en) * 1984-06-11 1988-11-29
JPS60263113A (en) * 1984-06-11 1985-12-26 Canon Inc Small-sized zoom lens
JPS61148414A (en) * 1984-12-21 1986-07-07 Canon Inc Compact zoom lens
JPS6239811A (en) * 1985-08-14 1987-02-20 Asahi Optical Co Ltd Copying use variable power lens
US4720179A (en) * 1985-11-28 1988-01-19 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use with a compact camera
JPH0431565B2 (en) * 1985-11-28 1992-05-26
JPS62264019A (en) * 1985-11-28 1987-11-17 Asahi Optical Co Ltd Zoom lens for compact camera
JPS62138817A (en) * 1985-12-12 1987-06-22 Canon Inc Small-sized zoom lens
DE3702351C2 (en) * 1986-01-28 1993-06-24 Canon K.K., Tokio/Tokyo, Jp
DE3702351A1 (en) * 1986-01-28 1987-07-30 Canon Kk Zoom lens with a lens member of veraenderlicher Vergroesserung
JPS62251710A (en) * 1986-04-25 1987-11-02 Olympus Optical Co Ltd Compact zoom lens
US4822152A (en) * 1986-08-11 1989-04-18 Olympus Optical Co., Ltd. Compact high-vari-focal ratio zoom lens system
JPS63311224A (en) * 1987-06-12 1988-12-20 Olympus Optical Co Ltd Compact zoom lens
US4911539A (en) * 1987-12-24 1990-03-27 Nikon Corporation Micro zoom lens
US4906077A (en) * 1988-01-29 1990-03-06 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use in a compact camera
DE3902495A1 (en) * 1988-01-29 1989-08-10 Asahi Optical Co Ltd Zoom lens system for the use in a compact camera
US5002373A (en) * 1988-02-10 1991-03-26 Olympus Optical Co., Ltd. Zoom lens system of inner focus type
DE3909755A1 (en) * 1988-03-25 1989-10-05 Asahi Optical Co Ltd Zoom-lens-system with a high zoom ratio camera compact-in to use
US4984877A (en) * 1988-03-25 1991-01-15 Asahi Kogaku Kogyo Kabushiki Kaishi High zoom-ratio/zoom lens system for use in a compact camera
JPH026917A (en) * 1988-04-15 1990-01-11 Konica Corp Small-sized variable focal length lens
DE3930032A1 (en) * 1988-09-08 1990-03-15 Asahi Optical Co Ltd Zoom lens system with a high brennweitenverhaeltnis for use in a compact camera
DE3943741C2 (en) * 1988-09-08 1996-02-22 Asahi Optical Co Ltd Zoom objective lens with wide range focal length
US4978204A (en) * 1988-09-08 1990-12-18 Asahi Kogaku Kogyo Kabushik Kaisha High zoom-ratio zoom lens system for use in a compact camera
JPH02120714A (en) * 1988-10-31 1990-05-08 Canon Inc Zoom lens of small size
JPH02190812A (en) * 1989-01-20 1990-07-26 Canon Inc Two-group zoom lens
JPH0396911A (en) * 1989-09-08 1991-04-22 Agency Of Ind Science & Technol Systematic generating method for equivalent optical system
JP2676000B2 (en) * 1989-09-08 1997-11-12 工業技術院長 Systematic generation method equivalent optical system
US5309285A (en) * 1989-09-29 1994-05-03 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use with a compact camera
DE4030757C2 (en) * 1989-09-29 1994-09-08 Asahi Optical Co Ltd Zoom lens for use with a compact camera
DE4042554C2 (en) * 1989-09-29 1996-12-19 Asahi Optical Co Ltd Camera zoom lens system
US5434712A (en) * 1989-09-29 1995-07-18 Asahi Kogaku Kogyo Kabushiki Kaisha Zoom lens system for use with a compact camera
DE4030757A1 (en) * 1989-09-29 1991-04-18 Asahi Optical Co Ltd Zoom lens system for the use of a compact camera
US5327290A (en) * 1989-10-13 1994-07-05 Minolta Camera Kabushiki Kaisha Compact size zoom lens system
US5162947A (en) * 1989-10-19 1992-11-10 Asahi Kogaku Kogyo K.K. Zoom lens system for use with a compact camera having a wide coverage of angles
DE4033293A1 (en) * 1989-10-19 1991-04-25 Asahi Optical Co Ltd Zoom lens system for compact camera - consists of two groups of lens with mechanism to vary distance between groups
DE4042540C2 (en) * 1989-11-21 1997-04-10 Asahi Optical Co Ltd Zoom lens for a compact camera
US5164859A (en) * 1989-11-21 1992-11-17 Asahi Kogaku Kogyo K.K. Zoom lens system for use with a compact camera having a wide coverage of angles
DE4042542C2 (en) * 1989-11-21 2001-02-15 Asahi Optical Co Ltd Varifocal lens for a compact camera
DE4037213A1 (en) * 1989-11-21 1991-06-13 Asahi Optical Co Ltd Zoom lens system for use in a compact camera with a wide angle detection range
DE4042543C2 (en) * 1989-11-21 1995-07-20 Asahi Optical Co Ltd Compact camera zoom lens system
US5283693A (en) * 1990-06-13 1994-02-01 Minolta Camera Kabushiki Kaisha Compact zoom lens system
DE4139431C2 (en) * 1990-11-30 2002-09-19 Asahi Optical Co Ltd zoom lens
US5280390A (en) * 1990-11-30 1994-01-18 Asahi Kogaku Kogyo K.K. Zoom lens system
DE4139431A1 (en) * 1990-11-30 1992-06-04 Asahi Optical Co Ltd Zoom lens system
US5267084A (en) * 1991-07-24 1993-11-30 Olympus Optical Co., Ltd. Compact, fast zoom lens system
US5418647A (en) * 1992-01-14 1995-05-23 Konica Corporation Compact zoom lens for use in a lens shutter camera
US5381270A (en) * 1992-06-22 1995-01-10 Fuji Photo Film Co., Ltd. Compact zoom lens system
US5815320A (en) * 1993-01-14 1998-09-29 Canon Kabushiki Kaisha Zoom lens
US5798873A (en) * 1993-11-25 1998-08-25 Canon Kabushiki Kaisha Small-sized zoom lens
US5757556A (en) * 1995-05-10 1998-05-26 Canon Kabushiki Kaisha Zoom lens
US6215600B1 (en) 1997-09-30 2001-04-10 Canon Kabushiki Kaisha Zoom lens
US6219190B1 (en) 1998-11-06 2001-04-17 Canon Kabushiki Kaisha Zoom lens
US6384986B1 (en) 1999-02-02 2002-05-07 Canon Kabushiki Kaisha Zoom lens and optical apparatus having the same
US6577452B2 (en) 2001-01-31 2003-06-10 Nikon Corporation Variable focal length lens system

Also Published As

Publication number Publication date
DE3109462C2 (en) 1994-06-01
DE3109462A1 (en) 1982-04-22

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