JPS5560911A - Wide angle zoom lens - Google Patents

Wide angle zoom lens

Info

Publication number
JPS5560911A
JPS5560911A JP13375078A JP13375078A JPS5560911A JP S5560911 A JPS5560911 A JP S5560911A JP 13375078 A JP13375078 A JP 13375078A JP 13375078 A JP13375078 A JP 13375078A JP S5560911 A JPS5560911 A JP S5560911A
Authority
JP
Japan
Prior art keywords
lens groups
group
zoom lens
rear group
front group
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
JP13375078A
Other languages
Japanese (ja)
Other versions
JPS5713853B2 (en
Inventor
Yusuke Nanjo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mamiya Camera Co Ltd
Original Assignee
Mamiya Camera Co Ltd
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 Mamiya Camera Co Ltd filed Critical Mamiya Camera Co Ltd
Priority to JP13375078A priority Critical patent/JPS5560911A/en
Publication of JPS5560911A publication Critical patent/JPS5560911A/en
Publication of JPS5713853B2 publication Critical patent/JPS5713853B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)

Abstract

PURPOSE: To provide the device which is about 1.7 times in zoom ratio and whose various aberrations are corrected with good balance by constituting the front group having negative refractive power by four lens groups and the rear group having positive refracting power with four lens groups and satisfying the specified conditions.
CONSTITUTION: The front group I is constituted by the 1stW4th lens groups L1W L4 and the rear group II by the 5thW8th lens groups L6WL8, and variable powers are accomplished by changing the air spacing between the front group I and rear group II. By satisfying the conditions such as formulas 1W 5, the zoom lens which is about 1.7 times in zoom ratio, about 75° in the angle of view at the wide end, is extremely compact and is cable of correcting various aberrations with good balance is provided.
COPYRIGHT: (C)1980,JPO&Japio
JP13375078A 1978-11-01 1978-11-01 Wide angle zoom lens Granted JPS5560911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13375078A JPS5560911A (en) 1978-11-01 1978-11-01 Wide angle zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13375078A JPS5560911A (en) 1978-11-01 1978-11-01 Wide angle zoom lens

Publications (2)

Publication Number Publication Date
JPS5560911A true JPS5560911A (en) 1980-05-08
JPS5713853B2 JPS5713853B2 (en) 1982-03-19

Family

ID=15112052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13375078A Granted JPS5560911A (en) 1978-11-01 1978-11-01 Wide angle zoom lens

Country Status (1)

Country Link
JP (1) JPS5560911A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858515A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS5858514A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS5858516A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS6080816A (en) * 1983-10-11 1985-05-08 Olympus Optical Co Ltd Objective lens of endoscope with less distortion aberration
US4963005A (en) * 1986-05-14 1990-10-16 Canon Kabushiki Kaishi Zoom lens having built-in diaphragm
US7277232B2 (en) 2003-01-24 2007-10-02 Nikon Corporation Zoom lens system
CN114706203A (en) * 2019-01-23 2022-07-05 佳能株式会社 Zoom lens, imaging device, and lens device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6063049U (en) * 1983-10-07 1985-05-02 株式会社小松製作所 Diesel engine cylinder block device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182642A (en) * 1974-12-28 1976-07-20 Nippon Kogaku Kk Kokakuzuumurenzukei
JPS5245941A (en) * 1975-10-09 1977-04-12 Nippon Kogaku Kk <Nikon> Wide angle zoom lens system
JPS52152250A (en) * 1976-05-10 1977-12-17 Asahi Optical Co Ltd Zoom lens system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182642A (en) * 1974-12-28 1976-07-20 Nippon Kogaku Kk Kokakuzuumurenzukei
JPS5245941A (en) * 1975-10-09 1977-04-12 Nippon Kogaku Kk <Nikon> Wide angle zoom lens system
JPS52152250A (en) * 1976-05-10 1977-12-17 Asahi Optical Co Ltd Zoom lens system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5858515A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS5858514A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS5858516A (en) * 1981-10-02 1983-04-07 Asahi Optical Co Ltd High-aperture ratio wide angle photographic lens using aspherical surface
JPS6132655B2 (en) * 1981-10-02 1986-07-28 Asahi Optical Co Ltd
JPS6136209B2 (en) * 1981-10-02 1986-08-16 Asahi Optical Co Ltd
JPS6148131B2 (en) * 1981-10-02 1986-10-22 Asahi Optical Co Ltd
JPS6080816A (en) * 1983-10-11 1985-05-08 Olympus Optical Co Ltd Objective lens of endoscope with less distortion aberration
JPH0585884B2 (en) * 1983-10-11 1993-12-09 Olympus Optical Co
US4963005A (en) * 1986-05-14 1990-10-16 Canon Kabushiki Kaishi Zoom lens having built-in diaphragm
US7277232B2 (en) 2003-01-24 2007-10-02 Nikon Corporation Zoom lens system
CN114706203A (en) * 2019-01-23 2022-07-05 佳能株式会社 Zoom lens, imaging device, and lens device

Also Published As

Publication number Publication date
JPS5713853B2 (en) 1982-03-19

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