JPH0476451B2 - - Google Patents
Info
- Publication number
- JPH0476451B2 JPH0476451B2 JP61175074A JP17507486A JPH0476451B2 JP H0476451 B2 JPH0476451 B2 JP H0476451B2 JP 61175074 A JP61175074 A JP 61175074A JP 17507486 A JP17507486 A JP 17507486A JP H0476451 B2 JPH0476451 B2 JP H0476451B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- group
- magnification
- negative
- refractive power
- 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 15
- 230000014509 gene expression Effects 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 6
- 201000009310 astigmatism Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 206010010071 Coma Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004304 visual acuity 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
- G02B15/16—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/177—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 with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a negative front lens or group of lenses
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61175074A JPS6332512A (ja) | 1986-07-25 | 1986-07-25 | ズ−ムレンズ |
US07/076,008 US4889416A (en) | 1986-07-25 | 1987-07-22 | Finite distance zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61175074A JPS6332512A (ja) | 1986-07-25 | 1986-07-25 | ズ−ムレンズ |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6332512A JPS6332512A (ja) | 1988-02-12 |
JPH0476451B2 true JPH0476451B2 (US20020051482A1-20020502-M00012.png) | 1992-12-03 |
Family
ID=15989776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61175074A Granted JPS6332512A (ja) | 1986-07-25 | 1986-07-25 | ズ−ムレンズ |
Country Status (2)
Country | Link |
---|---|
US (1) | US4889416A (US20020051482A1-20020502-M00012.png) |
JP (1) | JPS6332512A (US20020051482A1-20020502-M00012.png) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5268792A (en) * | 1991-05-20 | 1993-12-07 | Eastman Kodak Company | Zoom lens |
US5315440A (en) * | 1991-11-04 | 1994-05-24 | Eastman Kodak Company | Zoom lens having weak front lens group |
US5270867A (en) * | 1991-12-13 | 1993-12-14 | Eastman Kodak Company | Compact zoom lens having a weak front lens group |
US5270861A (en) * | 1991-12-13 | 1993-12-14 | Eastman Kodak Company | Zoom lens system for use in a compact camera |
US5428480A (en) * | 1993-02-16 | 1995-06-27 | Eastman Kodak Company | Zoom lens having weak plastic element |
JP3331011B2 (ja) * | 1993-07-08 | 2002-10-07 | オリンパス光学工業株式会社 | 小型の2群ズームレンズ |
US5844724A (en) * | 1996-12-23 | 1998-12-01 | Nikon Corporation | Wide angle zoom lens |
JP4994812B2 (ja) * | 2006-12-05 | 2012-08-08 | キヤノン株式会社 | 撮像装置 |
JP5887708B2 (ja) * | 2011-04-12 | 2016-03-16 | 株式会社ニコン | ズームレンズ、撮像装置 |
JP6425238B2 (ja) * | 2014-07-02 | 2018-11-21 | カンタツ株式会社 | 撮像レンズ |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142514A (ja) * | 1983-02-02 | 1984-08-15 | Olympus Optical Co Ltd | 明るいズ−ムレンズ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4923912B1 (US20020051482A1-20020502-M00012.png) * | 1970-12-15 | 1974-06-19 | ||
JPS5811609B2 (ja) * | 1978-03-10 | 1983-03-03 | 旭光学工業株式会社 | コンパクトな広角ズ−ムレンズ |
JPS5773715A (en) * | 1980-10-24 | 1982-05-08 | Asahi Optical Co Ltd | Zoom lens system for finite distance |
JPS57118213A (en) * | 1981-01-14 | 1982-07-23 | Asahi Optical Co Ltd | Compact and wide-angle zoom lens |
JPS57190917A (en) * | 1981-05-20 | 1982-11-24 | Canon Inc | Superwide-angle zoom lens |
JPS58132209A (ja) * | 1982-02-01 | 1983-08-06 | Canon Inc | 広角ズ−ムレンズ |
JPS6087312A (ja) * | 1983-10-20 | 1985-05-17 | Ricoh Co Ltd | 超広角高変倍ズ−ムレンズ |
JPH0629906B2 (ja) * | 1984-08-30 | 1994-04-20 | 株式会社ニコン | 可変焦点距離レンズ |
-
1986
- 1986-07-25 JP JP61175074A patent/JPS6332512A/ja active Granted
-
1987
- 1987-07-22 US US07/076,008 patent/US4889416A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59142514A (ja) * | 1983-02-02 | 1984-08-15 | Olympus Optical Co Ltd | 明るいズ−ムレンズ |
Also Published As
Publication number | Publication date |
---|---|
JPS6332512A (ja) | 1988-02-12 |
US4889416A (en) | 1989-12-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term |