JPS523584B1 - - Google Patents
Info
- Publication number
- JPS523584B1 JPS523584B1 JP46053100A JP5310071A JPS523584B1 JP S523584 B1 JPS523584 B1 JP S523584B1 JP 46053100 A JP46053100 A JP 46053100A JP 5310071 A JP5310071 A JP 5310071A JP S523584 B1 JPS523584 B1 JP S523584B1
- Authority
- JP
- Japan
- 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
- G02B15/143—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 three groups only
- G02B15/1435—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 three groups only the first group being negative
- G02B15/143507—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 three 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 (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46053100A JPS523584B1 (ja) | 1971-07-19 | 1971-07-19 | |
| GB3317072A GB1392056A (en) | 1971-07-19 | 1972-07-14 | Variable magnification lens system |
| US00272071A US3788731A (en) | 1971-07-19 | 1972-07-14 | Two point focus variable magnification lens system |
| DE2235412A DE2235412C2 (de) | 1971-07-19 | 1972-07-19 | Varioobjektiv |
| FR7226074A FR2146397B1 (ja) | 1971-07-19 | 1972-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46053100A JPS523584B1 (ja) | 1971-07-19 | 1971-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS523584B1 true JPS523584B1 (ja) | 1977-01-28 |
Family
ID=12933354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP46053100A Pending JPS523584B1 (ja) | 1971-07-19 | 1971-07-19 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3788731A (ja) |
| JP (1) | JPS523584B1 (ja) |
| DE (1) | DE2235412C2 (ja) |
| FR (1) | FR2146397B1 (ja) |
| GB (1) | GB1392056A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824859A (ja) * | 1982-06-10 | 1983-02-14 | Tokico Ltd | ブレ−キ液の性能チェック方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3861832A (en) * | 1972-08-04 | 1975-01-21 | Poclain Sa | Pump power governor |
| GB1559514A (en) * | 1976-10-02 | 1980-01-23 | Pilkington Perkin Elmer Ltd | Infra-red zoom lenses |
| US4406522A (en) * | 1980-09-02 | 1983-09-27 | Minnesota Mining & Manufacturing Company | Variable magnification lens |
| JPS63221313A (ja) * | 1987-03-11 | 1988-09-14 | Olympus Optical Co Ltd | ズ−ムフアインダ− |
| JP2699394B2 (ja) * | 1988-04-07 | 1998-01-19 | ミノルタ株式会社 | 変倍ファインダー光学系 |
| JPH07199070A (ja) * | 1993-12-28 | 1995-08-04 | Nikon Corp | ズームレンズ |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH427334A (de) * | 1963-08-28 | 1966-12-31 | Bertele Ludwig | Objektiv veränderbarer Brennweite |
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1971
- 1971-07-19 JP JP46053100A patent/JPS523584B1/ja active Pending
-
1972
- 1972-07-14 US US00272071A patent/US3788731A/en not_active Expired - Lifetime
- 1972-07-14 GB GB3317072A patent/GB1392056A/en not_active Expired
- 1972-07-19 FR FR7226074A patent/FR2146397B1/fr not_active Expired
- 1972-07-19 DE DE2235412A patent/DE2235412C2/de not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824859A (ja) * | 1982-06-10 | 1983-02-14 | Tokico Ltd | ブレ−キ液の性能チェック方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2146397B1 (ja) | 1974-12-27 |
| DE2235412A1 (de) | 1973-02-01 |
| GB1392056A (en) | 1975-04-23 |
| DE2235412C2 (de) | 1984-10-11 |
| US3788731A (en) | 1974-01-29 |
| FR2146397A1 (ja) | 1973-03-02 |