JPH0576608B2 - - Google Patents
Info
- Publication number
- JPH0576608B2 JPH0576608B2 JP59184240A JP18424084A JPH0576608B2 JP H0576608 B2 JPH0576608 B2 JP H0576608B2 JP 59184240 A JP59184240 A JP 59184240A JP 18424084 A JP18424084 A JP 18424084A JP H0576608 B2 JPH0576608 B2 JP H0576608B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lens group
- focal length
- refractive power
- positive refractive
- 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.)
- Expired - Lifetime
Links
- 230000004075 alteration Effects 0.000 description 27
- 238000010586 diagram Methods 0.000 description 17
- 206010010071 Coma Diseases 0.000 description 6
- 230000005499 meniscus Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical 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
- G02B15/144—Optical 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 four groups only
- G02B15/1441—Optical 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 four groups only the first group being positive
- G02B15/144113—Optical 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 four groups only the first group being positive arranged +-++
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59184240A JPS6162012A (ja) | 1984-09-03 | 1984-09-03 | ズ−ムレンズ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59184240A JPS6162012A (ja) | 1984-09-03 | 1984-09-03 | ズ−ムレンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6162012A JPS6162012A (ja) | 1986-03-29 |
JPH0576608B2 true JPH0576608B2 (en, 2012) | 1993-10-25 |
Family
ID=16149832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59184240A Granted JPS6162012A (ja) | 1984-09-03 | 1984-09-03 | ズ−ムレンズ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6162012A (en, 2012) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4917482A (en) * | 1987-12-29 | 1990-04-17 | Asahi Kogaku Kogyo Kabushiki Kaisha | Compact zoom lens system capable of high zoom ratio and having coverage of a wide visual field |
JP2859734B2 (ja) * | 1990-11-22 | 1999-02-24 | オリンパス光学工業株式会社 | ズームレンズ |
JP3387687B2 (ja) * | 1995-03-13 | 2003-03-17 | キヤノン株式会社 | ズームレンズ |
JP4994796B2 (ja) * | 2006-11-14 | 2012-08-08 | キヤノン株式会社 | ズームレンズ及びそれを有する撮像装置 |
JP6672358B2 (ja) * | 2018-03-08 | 2020-03-25 | キヤノン株式会社 | ズームレンズ及び撮像装置 |
-
1984
- 1984-09-03 JP JP59184240A patent/JPS6162012A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6162012A (ja) | 1986-03-29 |
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