JPS57163213A - Zoom lens of high variable magnification ratio having fixed lens group - Google Patents
Zoom lens of high variable magnification ratio having fixed lens groupInfo
- Publication number
- JPS57163213A JPS57163213A JP56047165A JP4716581A JPS57163213A JP S57163213 A JPS57163213 A JP S57163213A JP 56047165 A JP56047165 A JP 56047165A JP 4716581 A JP4716581 A JP 4716581A JP S57163213 A JPS57163213 A JP S57163213A
- Authority
- JP
- Japan
- Prior art keywords
- group
- lens
- distance
- negative
- variable magnification
- 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
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
- G02B15/1445—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 -+-+
-
- 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)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Lenses (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56047165A JPS57163213A (en) | 1981-04-01 | 1981-04-01 | Zoom lens of high variable magnification ratio having fixed lens group |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56047165A JPS57163213A (en) | 1981-04-01 | 1981-04-01 | Zoom lens of high variable magnification ratio having fixed lens group |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57163213A true JPS57163213A (en) | 1982-10-07 |
JPS6155094B2 JPS6155094B2 (ja) | 1986-11-26 |
Family
ID=12767452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56047165A Granted JPS57163213A (en) | 1981-04-01 | 1981-04-01 | Zoom lens of high variable magnification ratio having fixed lens group |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57163213A (ja) |
Cited By (10)
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 |
US5229886A (en) * | 1991-02-19 | 1993-07-20 | Canon Kabushiki Kaisha | Zoom lens |
US5253113A (en) * | 1990-09-07 | 1993-10-12 | Canon Kabushiki Kaisha | Wide-angle zoom lens having five lens units |
US5576890A (en) * | 1992-02-28 | 1996-11-19 | Canon Kabushiki Kaisha | Zoom lens |
US5691851A (en) * | 1993-07-14 | 1997-11-25 | Canon Kabushiki Kaisha | Zoom lens |
US5710669A (en) * | 1994-03-17 | 1998-01-20 | Canon Kabushiki Kaisha | Wide-angle zoom lens |
US5739960A (en) * | 1996-01-25 | 1998-04-14 | Canon Kabushiki Kaisha | Zoom lens device with five lens units |
US6191896B1 (en) | 1997-09-04 | 2001-02-20 | Canon Kabushiki Kaisha | Zoom lens and optical apparatus having the same |
JP2001174704A (ja) * | 1999-12-21 | 2001-06-29 | Olympus Optical Co Ltd | ズームレンズ |
US6285509B1 (en) | 1997-12-25 | 2001-09-04 | Canon Kabushiki Kaisha | Zoom lens and display apparatus having the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0426469Y2 (ja) * | 1987-05-29 | 1992-06-25 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2704487A (en) * | 1952-07-22 | 1955-03-22 | Optical system of variable focal length | |
JPS5334539A (en) * | 1976-09-13 | 1978-03-31 | Tokina Optical | Wide angle high zoom ratio zoom system |
JPS5514403A (en) * | 1978-07-14 | 1980-01-31 | Hitachi Ltd | Frost sensor |
-
1981
- 1981-04-01 JP JP56047165A patent/JPS57163213A/ja active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2704487A (en) * | 1952-07-22 | 1955-03-22 | Optical system of variable focal length | |
JPS5334539A (en) * | 1976-09-13 | 1978-03-31 | Tokina Optical | Wide angle high zoom ratio zoom system |
JPS5514403A (en) * | 1978-07-14 | 1980-01-31 | Hitachi Ltd | Frost sensor |
Cited By (12)
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 | |
US5253113A (en) * | 1990-09-07 | 1993-10-12 | Canon Kabushiki Kaisha | Wide-angle zoom lens having five lens units |
US5229886A (en) * | 1991-02-19 | 1993-07-20 | Canon Kabushiki Kaisha | Zoom lens |
US5576890A (en) * | 1992-02-28 | 1996-11-19 | Canon Kabushiki Kaisha | Zoom lens |
US5691851A (en) * | 1993-07-14 | 1997-11-25 | Canon Kabushiki Kaisha | Zoom lens |
US5710669A (en) * | 1994-03-17 | 1998-01-20 | Canon Kabushiki Kaisha | Wide-angle zoom lens |
US5739960A (en) * | 1996-01-25 | 1998-04-14 | Canon Kabushiki Kaisha | Zoom lens device with five lens units |
US6191896B1 (en) | 1997-09-04 | 2001-02-20 | Canon Kabushiki Kaisha | Zoom lens and optical apparatus having the same |
US6233099B1 (en) | 1997-09-04 | 2001-05-15 | Canon Kabushiki Kaisha | Zoom lens and optical apparatus having the same |
US6285509B1 (en) | 1997-12-25 | 2001-09-04 | Canon Kabushiki Kaisha | Zoom lens and display apparatus having the same |
JP2001174704A (ja) * | 1999-12-21 | 2001-06-29 | Olympus Optical Co Ltd | ズームレンズ |
Also Published As
Publication number | Publication date |
---|---|
JPS6155094B2 (ja) | 1986-11-26 |
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