JPS5540850B1 - - Google Patents
Info
- Publication number
- JPS5540850B1 JPS5540850B1 JP2419771A JP2419771A JPS5540850B1 JP S5540850 B1 JPS5540850 B1 JP S5540850B1 JP 2419771 A JP2419771 A JP 2419771A JP 2419771 A JP2419771 A JP 2419771A JP S5540850 B1 JPS5540850 B1 JP S5540850B1
- 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
- G02B15/144—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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT353370A AT291620B (de) | 1970-04-17 | 1970-04-17 | Pankratisches Objektiv |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5540850B1 true JPS5540850B1 (de) | 1980-10-21 |
Family
ID=3551828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2419771A Pending JPS5540850B1 (de) | 1970-04-17 | 1971-04-15 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5540850B1 (de) |
| AT (1) | AT291620B (de) |
| DE (1) | DE2115869C3 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362174U (de) * | 1986-10-14 | 1988-04-25 |
-
1970
- 1970-04-17 AT AT353370A patent/AT291620B/de not_active IP Right Cessation
-
1971
- 1971-04-01 DE DE2115869A patent/DE2115869C3/de not_active Expired
- 1971-04-15 JP JP2419771A patent/JPS5540850B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6362174U (de) * | 1986-10-14 | 1988-04-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2115869C3 (de) | 1979-09-06 |
| DE2115869A1 (de) | 1971-10-28 |
| DE2115869B2 (de) | 1979-01-11 |
| AT291620B (de) | 1971-07-26 |