JPS5535323A - Super wide-angle zoom lens - Google Patents

Super wide-angle zoom lens

Info

Publication number
JPS5535323A
JPS5535323A JP10748578A JP10748578A JPS5535323A JP S5535323 A JPS5535323 A JP S5535323A JP 10748578 A JP10748578 A JP 10748578A JP 10748578 A JP10748578 A JP 10748578A JP S5535323 A JPS5535323 A JP S5535323A
Authority
JP
Japan
Prior art keywords
group
iris
zoom lens
angle
lens
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
JP10748578A
Other languages
Japanese (ja)
Other versions
JPS5653729B2 (en
Inventor
Jihei Nakagawa
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.)
Sigma Inc
Original Assignee
Sigma 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 Sigma Inc filed Critical Sigma Inc
Priority to JP10748578A priority Critical patent/JPS5535323A/en
Publication of JPS5535323A publication Critical patent/JPS5535323A/en
Publication of JPS5653729B2 publication Critical patent/JPS5653729B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the super wide-angle zoom lens in which 3 groups move independently by constituting the lens with the 1st group of negative refracting power, the 2nd group disposed with positive and negative refractive powers with iris in- between and the 3rd group of positive refracting power and limiting power disposition and iris spacing.
CONSTITUTION: In order to make aberration correction and compactification compatible, the relative distance between the 2nd group and 3rd group is changed in zooming. Compactification is made possible by the formula (I) which limits the composite focal length of the 1st group I, various aberrations are corrected by the formulas (II), (III) which limit the power disposition and iris spacing of the 2nd group II, and the composite focal length of the 3rd group III is limited by formula (IV), whereby the aberration fluctuations during zooming may be reduced and sufficient back focus length obtained. This enables the compact zoom lens for single-lens reflex cameras of the angle of view reaching 92° at the wide-angle end to be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP10748578A 1978-09-04 1978-09-04 Super wide-angle zoom lens Granted JPS5535323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10748578A JPS5535323A (en) 1978-09-04 1978-09-04 Super wide-angle zoom lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10748578A JPS5535323A (en) 1978-09-04 1978-09-04 Super wide-angle zoom lens

Publications (2)

Publication Number Publication Date
JPS5535323A true JPS5535323A (en) 1980-03-12
JPS5653729B2 JPS5653729B2 (en) 1981-12-21

Family

ID=14460403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10748578A Granted JPS5535323A (en) 1978-09-04 1978-09-04 Super wide-angle zoom lens

Country Status (1)

Country Link
JP (1) JPS5535323A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158316A (en) * 1980-05-10 1981-12-07 Minolta Camera Co Ltd Wide-angle zoom lens
JPS5726816A (en) * 1980-07-24 1982-02-13 Minolta Camera Co Ltd Wide angle zoom lens system consisting of three components
US4465343A (en) * 1980-05-10 1984-08-14 Minolta Camera Kabushiki Kaisha Zoom lens system
JPS614733U (en) * 1984-06-13 1986-01-13 エステ−化学株式会社 dehumidifier packaging
US4735493A (en) * 1985-01-24 1988-04-05 Asahi Kogaku Kogyo Kabushiki Kaisha Wipe-angle zoom lens system
US6308011B1 (en) 1998-03-31 2001-10-23 Canon Kabushiki Kaisha Zoom lens and photographic apparatus having the same
KR101100616B1 (en) 2010-03-02 2012-01-03 주식회사 코렌 Zoom lens system and image pickup apparatus including the same
KR101100617B1 (en) 2010-03-02 2012-01-03 주식회사 코렌 Zoom lens system and image pickup apparatus including the same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130101U (en) * 1985-02-05 1986-08-14
JPS61148207U (en) * 1985-03-07 1986-09-12

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923912A (en) * 1972-07-03 1974-03-02
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS52153752A (en) * 1976-06-17 1977-12-21 Olympus Optical Co Ltd Wide angle zoom lens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923912A (en) * 1972-07-03 1974-03-02
JPS5226236A (en) * 1975-08-22 1977-02-26 Canon Inc Zoom lens system
JPS52153752A (en) * 1976-06-17 1977-12-21 Olympus Optical Co Ltd Wide angle zoom lens

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56158316A (en) * 1980-05-10 1981-12-07 Minolta Camera Co Ltd Wide-angle zoom lens
US4465343A (en) * 1980-05-10 1984-08-14 Minolta Camera Kabushiki Kaisha Zoom lens system
JPS5726816A (en) * 1980-07-24 1982-02-13 Minolta Camera Co Ltd Wide angle zoom lens system consisting of three components
JPH0146847B2 (en) * 1980-07-24 1989-10-11 Minolta Camera Kk
JPS614733U (en) * 1984-06-13 1986-01-13 エステ−化学株式会社 dehumidifier packaging
JPH0243472Y2 (en) * 1984-06-13 1990-11-19
US4735493A (en) * 1985-01-24 1988-04-05 Asahi Kogaku Kogyo Kabushiki Kaisha Wipe-angle zoom lens system
US6308011B1 (en) 1998-03-31 2001-10-23 Canon Kabushiki Kaisha Zoom lens and photographic apparatus having the same
KR101100616B1 (en) 2010-03-02 2012-01-03 주식회사 코렌 Zoom lens system and image pickup apparatus including the same
KR101100617B1 (en) 2010-03-02 2012-01-03 주식회사 코렌 Zoom lens system and image pickup apparatus including the same

Also Published As

Publication number Publication date
JPS5653729B2 (en) 1981-12-21

Similar Documents

Publication Publication Date Title
JPS5744115A (en) Reflex telephoto zoom lens system
JPS5528038A (en) Lens system for close distance photographing
JPS54127322A (en) Zoom lens
JPH0416764B2 (en)
JPS5535323A (en) Super wide-angle zoom lens
JPS5581316A (en) Lens system for copying
JPS56114918A (en) Large-diameter lens with easy focusing
JPS561009A (en) Zoom lens
JPS5397824A (en) Camera lens of behind iris
JPS5648607A (en) Wide-angle zoom lens
JPS5651709A (en) Reverse telephoto type wide angle lens
JPH0416765B2 (en)
JPH03278012A (en) Inner focus type macro-lens
JPS55127533A (en) Optical system of single-lens reflex camera
JPS57135913A (en) Zoom lens
JPS55163511A (en) 2-group constitution zoom lens
JPS5470826A (en) Wide-angle objective lens
JPS55130510A (en) Afocal barrel lens
JPS56126819A (en) Compact telephoto zoom lens
JPS55111915A (en) Zoom lens
JPS56161517A (en) Telephoto zoom lens
JPS5470827A (en) Telephoto lens
JPS5612614A (en) Compact zoom lens system
JPS55161207A (en) Zoom lens of small size
JPH0444245B2 (en)