DE1248972B - - Google Patents
Info
- Publication number
- DE1248972B DE1248972B DENDAT1248972D DE1248972DB DE1248972B DE 1248972 B DE1248972 B DE 1248972B DE NDAT1248972 D DENDAT1248972 D DE NDAT1248972D DE 1248972D B DE1248972D B DE 1248972DB DE 1248972 B DE1248972 B DE 1248972B
- Authority
- DE
- Germany
- 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
- G02B15/1441—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 positive
- G02B15/144113—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 positive arranged +-++
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESC036311 | 1964-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1248972B true DE1248972B (enExample) |
Family
ID=7433818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT1248972D Pending DE1248972B (enExample) | 1964-12-28 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3451743A (enExample) |
| AT (1) | AT259896B (enExample) |
| CH (1) | CH435787A (enExample) |
| DE (1) | DE1248972B (enExample) |
| FR (1) | FR1473070A (enExample) |
| GB (1) | GB1134839A (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2043193C3 (de) * | 1970-09-01 | 1980-10-30 | Kurt 2000 Hamburg Kirchhoff | Anamorphotisches Aufnahmeobjektiv mit veränderbarer Brennweite |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2925010A (en) * | 1959-01-15 | 1960-02-16 | Wollensak Optical Co | Variable focal length lens |
| US2997921A (en) * | 1959-10-07 | 1961-08-29 | Revere Camera Co | Lens for zoom viewfinders |
| US2984155A (en) * | 1959-12-28 | 1961-05-16 | Bausch & Lomb | Variable magnification afocal optical system |
| US3307898A (en) * | 1963-09-30 | 1967-03-07 | Bausch & Lomb | Optically compensated loom type optical objective |
-
0
- DE DENDAT1248972D patent/DE1248972B/de active Pending
-
1965
- 1965-12-16 AT AT1133365A patent/AT259896B/de active
- 1965-12-21 CH CH1760465A patent/CH435787A/de unknown
- 1965-12-23 GB GB54715/65A patent/GB1134839A/en not_active Expired
- 1965-12-27 US US516372A patent/US3451743A/en not_active Expired - Lifetime
- 1965-12-27 FR FR43757A patent/FR1473070A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1473070A (fr) | 1967-03-17 |
| US3451743A (en) | 1969-06-24 |
| CH435787A (de) | 1967-05-15 |
| AT259896B (de) | 1968-02-12 |
| GB1134839A (en) | 1968-11-27 |