NL121784C - - Google Patents
Info
- Publication number
- NL121784C NL121784C NL121784DC NL121784C NL 121784 C NL121784 C NL 121784C NL 121784D C NL121784D C NL 121784DC NL 121784 C NL121784 C NL 121784C
- Authority
- NL
- Netherlands
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
- G02B15/145—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 five groups only
- G02B15/1455—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 five groups only the first group being negative
- G02B15/145527—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 five groups only the first group being negative arranged -+-++
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEV15795A DE1094480B (en) | 1959-01-21 | 1959-01-21 | Pancratic lens for recording and playback purposes |
| DEV0021158 | 1961-08-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL121784C true NL121784C (en) |
Family
ID=26001327
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL121784D NL121784C (en) | 1959-01-21 | ||
| NL247454D NL247454A (en) | 1959-01-21 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL247454D NL247454A (en) | 1959-01-21 |
Country Status (5)
| Country | Link |
|---|---|
| CH (2) | CH399769A (en) |
| DE (1) | DE1094480B (en) |
| FR (1) | FR1247591A (en) |
| GB (2) | GB949465A (en) |
| NL (2) | NL247454A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2253281B (en) * | 1991-02-15 | 1994-05-25 | Asahi Optical Co Ltd | Zoom lens |
-
0
- NL NL121784D patent/NL121784C/xx active
- NL NL247454D patent/NL247454A/xx unknown
-
1959
- 1959-01-21 DE DEV15795A patent/DE1094480B/en active Pending
-
1960
- 1960-01-04 CH CH860A patent/CH399769A/en unknown
- 1960-01-18 GB GB1749/60A patent/GB949465A/en not_active Expired
- 1960-01-21 FR FR816258A patent/FR1247591A/en not_active Expired
-
1961
- 1961-10-02 CH CH1144161A patent/CH399770A/en unknown
-
1962
- 1962-07-10 GB GB26555/62A patent/GB1016881A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB949465A (en) | 1964-02-12 |
| FR1247591A (en) | 1960-12-02 |
| CH399770A (en) | 1965-09-30 |
| GB1016881A (en) | 1966-01-12 |
| CH399769A (en) | 1965-09-30 |
| DE1094480B (en) | 1960-12-08 |
| NL247454A (en) |