JPS5535323A - Super wide-angle zoom lens - Google Patents
Super wide-angle zoom lensInfo
- 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
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
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)
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)
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)
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 |
-
1978
- 1978-09-04 JP JP10748578A patent/JPS5535323A/en active Granted
Patent Citations (3)
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)
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 |
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