AT340168B - Grundobjektiv - Google Patents
GrundobjektivInfo
- Publication number
- AT340168B AT340168B AT924274A AT924274A AT340168B AT 340168 B AT340168 B AT 340168B AT 924274 A AT924274 A AT 924274A AT 924274 A AT924274 A AT 924274A AT 340168 B AT340168 B AT 340168B
- Authority
- AT
- Austria
- Prior art keywords
- basic lens
- lens
- basic
- Prior art date
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
- G02B15/144109—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 +--+
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT924274A AT340168B (de) | 1974-11-18 | 1974-11-18 | Grundobjektiv |
FR7534813A FR2291513A1 (fr) | 1974-11-18 | 1975-11-14 | Objectif principal |
DE19752551334 DE2551334A1 (de) | 1974-11-18 | 1975-11-15 | Grundobjektiv |
JP50138601A JPS5173451A (de) | 1974-11-18 | 1975-11-18 | |
US05/633,088 US4050788A (en) | 1974-11-18 | 1975-11-18 | Basic lens for pancratic system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT924274A AT340168B (de) | 1974-11-18 | 1974-11-18 | Grundobjektiv |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA924274A ATA924274A (de) | 1977-03-15 |
AT340168B true AT340168B (de) | 1977-11-25 |
Family
ID=3612447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT924274A AT340168B (de) | 1974-11-18 | 1974-11-18 | Grundobjektiv |
Country Status (5)
Country | Link |
---|---|
US (1) | US4050788A (de) |
JP (1) | JPS5173451A (de) |
AT (1) | AT340168B (de) |
DE (1) | DE2551334A1 (de) |
FR (1) | FR2291513A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5417042A (en) * | 1977-07-08 | 1979-02-08 | Canon Inc | Wide-angle zoom lens |
US4390248A (en) * | 1979-09-27 | 1983-06-28 | Canon Kabushiki Kaisha | Wide angle zoom lens |
JPS57135912A (en) * | 1981-02-16 | 1982-08-21 | Asahi Optical Co Ltd | Zoom lens |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT317576B (de) * | 1972-01-13 | 1974-09-10 | Eumig | Pankratisches Objektiv |
AT333051B (de) * | 1972-10-16 | 1976-11-10 | Eumig | Pankratisches objektiv |
-
1974
- 1974-11-18 AT AT924274A patent/AT340168B/de not_active IP Right Cessation
-
1975
- 1975-11-14 FR FR7534813A patent/FR2291513A1/fr active Granted
- 1975-11-15 DE DE19752551334 patent/DE2551334A1/de not_active Withdrawn
- 1975-11-18 JP JP50138601A patent/JPS5173451A/ja active Pending
- 1975-11-18 US US05/633,088 patent/US4050788A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2291513A1 (fr) | 1976-06-11 |
ATA924274A (de) | 1977-03-15 |
US4050788A (en) | 1977-09-27 |
JPS5173451A (de) | 1976-06-25 |
DE2551334A1 (de) | 1976-05-20 |
FR2291513B1 (de) | 1982-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |