JPS56107208A - Objective lens of large aperture - Google Patents
Objective lens of large apertureInfo
- Publication number
- JPS56107208A JPS56107208A JP1293080A JP1293080A JPS56107208A JP S56107208 A JPS56107208 A JP S56107208A JP 1293080 A JP1293080 A JP 1293080A JP 1293080 A JP1293080 A JP 1293080A JP S56107208 A JPS56107208 A JP S56107208A
- Authority
- JP
- Japan
- Prior art keywords
- denoted
- short
- distance photographing
- aperture
- satisfied
- 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
- G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
- G02B9/34—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having four components only
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
PURPOSE:To maintain excellent picture quality even at a circumference with regard to short-distance photographing by permitting vaious specifications of a gauss type or modified gauss type photographic lens to meet prescribed requirements. CONSTITUTION:The focal length of the whole system is denoted as 1, and while the force of refraction of a group before the aperture is denoted as phi1, that of the rear group is denoted as phi2. In this case, formula I should be satisfied. For short-distance photographing, the whole system is drawn out and at the same time, air interval D5 where the aperture is equipped is widened. When the extent of the correction of the interval is denoted as DELTAd and the extent of the movement of the rear group as DELTAS, formula II is satisfied. Consequently, deterioration in aberration in short-distance photographing, specially in outward coma aberration is corrected, so that excellent picture quality can be maintained as far as the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1293080A JPS56107208A (en) | 1980-01-31 | 1980-01-31 | Objective lens of large aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1293080A JPS56107208A (en) | 1980-01-31 | 1980-01-31 | Objective lens of large aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56107208A true JPS56107208A (en) | 1981-08-26 |
Family
ID=11819017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1293080A Pending JPS56107208A (en) | 1980-01-31 | 1980-01-31 | Objective lens of large aperture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56107208A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708445A (en) * | 1983-11-07 | 1987-11-24 | Olympus Optical Co., Ltd. | Large aperture ratio photographic lens system |
| US4786153A (en) * | 1986-02-24 | 1988-11-22 | Olympus Optical Co., Ltd. | Large-aperture macro lens system |
| CN108388000A (en) * | 2018-02-11 | 2018-08-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN108388002A (en) * | 2018-02-11 | 2018-08-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| JP2019139197A (en) * | 2018-02-11 | 2019-08-22 | エーエーシー テクノロジーズ ピーティーイー リミテッド | Imaging optical lens |
-
1980
- 1980-01-31 JP JP1293080A patent/JPS56107208A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4708445A (en) * | 1983-11-07 | 1987-11-24 | Olympus Optical Co., Ltd. | Large aperture ratio photographic lens system |
| US4786153A (en) * | 1986-02-24 | 1988-11-22 | Olympus Optical Co., Ltd. | Large-aperture macro lens system |
| CN108388000A (en) * | 2018-02-11 | 2018-08-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| CN108388002A (en) * | 2018-02-11 | 2018-08-10 | 瑞声科技(新加坡)有限公司 | Camera optical camera lens |
| JP2019139197A (en) * | 2018-02-11 | 2019-08-22 | エーエーシー テクノロジーズ ピーティーイー リミテッド | Imaging optical lens |
| CN108388000B (en) * | 2018-02-11 | 2020-08-25 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
| CN108388002B (en) * | 2018-02-11 | 2020-08-25 | 瑞声光学解决方案私人有限公司 | Image pickup optical lens |
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