JPS5711315A - Zoom lens with highly variable magnification preceding negative groups - Google Patents
Zoom lens with highly variable magnification preceding negative groupsInfo
- Publication number
- JPS5711315A JPS5711315A JP8455580A JP8455580A JPS5711315A JP S5711315 A JPS5711315 A JP S5711315A JP 8455580 A JP8455580 A JP 8455580A JP 8455580 A JP8455580 A JP 8455580A JP S5711315 A JPS5711315 A JP S5711315A
- Authority
- JP
- Japan
- Prior art keywords
- lens groups
- variable magnification
- highly variable
- zoom lens
- negative groups
- 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.)
- Pending
Links
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
-
- 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
- G02B15/1445—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 negative
- G02B15/144511—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 negative arranged -+-+
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455580A JPS5711315A (en) | 1980-06-24 | 1980-06-24 | Zoom lens with highly variable magnification preceding negative groups |
GB8118682A GB2080966B (en) | 1980-06-24 | 1981-06-17 | A zoom lens of high vari-focal ratio having negative front lens group |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8455580A JPS5711315A (en) | 1980-06-24 | 1980-06-24 | Zoom lens with highly variable magnification preceding negative groups |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5711315A true JPS5711315A (en) | 1982-01-21 |
Family
ID=13833883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8455580A Pending JPS5711315A (en) | 1980-06-24 | 1980-06-24 | Zoom lens with highly variable magnification preceding negative groups |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPS5711315A (ja) |
GB (1) | GB2080966B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5895315A (ja) * | 1981-11-30 | 1983-06-06 | Minolta Camera Co Ltd | 広角域を含む高変倍率ズ−ムレンズ系 |
JPH02201310A (ja) * | 1989-01-30 | 1990-08-09 | Canon Inc | 内蔵フォーカスレンズを具えたズームレンズ |
JPH0392808A (ja) * | 1989-09-05 | 1991-04-18 | Canon Inc | ズームレンズ |
US7075730B2 (en) | 2004-06-25 | 2006-07-11 | Canon Kabushiki Kaisha | Zoom lens system and image pickup apparatus including the same |
US7102829B2 (en) | 2003-09-19 | 2006-09-05 | Canon Kabushiki Kaisha | Zoom lens system and image pickup device having zoom lens system |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59214009A (ja) * | 1983-05-19 | 1984-12-03 | Asahi Optical Co Ltd | 高変倍有限距離用ズ−ムレンズ |
US5264965A (en) * | 1991-02-15 | 1993-11-23 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens |
JP2000241704A (ja) | 1999-02-18 | 2000-09-08 | Asahi Optical Co Ltd | ズームレンズ系 |
JP3847506B2 (ja) * | 1999-12-21 | 2006-11-22 | オリンパス株式会社 | ズームレンズ |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4923912A (ja) * | 1972-07-03 | 1974-03-02 | ||
JPS5334539A (en) * | 1976-09-13 | 1978-03-31 | Tokina Optical | Wide angle high zoom ratio zoom system |
JPS54151027A (en) * | 1978-05-19 | 1979-11-27 | Sigma Kk | Small wide angle zoom lens |
-
1980
- 1980-06-24 JP JP8455580A patent/JPS5711315A/ja active Pending
-
1981
- 1981-06-17 GB GB8118682A patent/GB2080966B/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4923912A (ja) * | 1972-07-03 | 1974-03-02 | ||
JPS5334539A (en) * | 1976-09-13 | 1978-03-31 | Tokina Optical | Wide angle high zoom ratio zoom system |
JPS54151027A (en) * | 1978-05-19 | 1979-11-27 | Sigma Kk | Small wide angle zoom lens |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5895315A (ja) * | 1981-11-30 | 1983-06-06 | Minolta Camera Co Ltd | 広角域を含む高変倍率ズ−ムレンズ系 |
JPH0546525B2 (ja) * | 1981-11-30 | 1993-07-14 | Minolta Camera Kk | |
JPH02201310A (ja) * | 1989-01-30 | 1990-08-09 | Canon Inc | 内蔵フォーカスレンズを具えたズームレンズ |
JPH0392808A (ja) * | 1989-09-05 | 1991-04-18 | Canon Inc | ズームレンズ |
US7102829B2 (en) | 2003-09-19 | 2006-09-05 | Canon Kabushiki Kaisha | Zoom lens system and image pickup device having zoom lens system |
US7196852B2 (en) | 2003-09-19 | 2007-03-27 | Canon Kabushiki Kaisha | Zoom lens system and image pickup device having zoom lens system |
US7075730B2 (en) | 2004-06-25 | 2006-07-11 | Canon Kabushiki Kaisha | Zoom lens system and image pickup apparatus including the same |
Also Published As
Publication number | Publication date |
---|---|
GB2080966A (en) | 1982-02-10 |
GB2080966B (en) | 1984-08-08 |
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