FR2372446B2 - - Google Patents
Info
- Publication number
- FR2372446B2 FR2372446B2 FR7636042A FR7636042A FR2372446B2 FR 2372446 B2 FR2372446 B2 FR 2372446B2 FR 7636042 A FR7636042 A FR 7636042A FR 7636042 A FR7636042 A FR 7636042A FR 2372446 B2 FR2372446 B2 FR 2372446B2
- Authority
- FR
- France
- 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.)
- Expired
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
- G02B15/142—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 two groups only
- G02B15/1425—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 two groups only the first group being negative
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7636042A FR2372446A2 (fr) | 1976-11-30 | 1976-11-30 | Variateur optique de grandissement d'image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7636042A FR2372446A2 (fr) | 1976-11-30 | 1976-11-30 | Variateur optique de grandissement d'image |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2372446A2 FR2372446A2 (fr) | 1978-06-23 |
| FR2372446B2 true FR2372446B2 (en, 2012) | 1981-07-17 |
Family
ID=9180465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7636042A Granted FR2372446A2 (fr) | 1976-11-30 | 1976-11-30 | Variateur optique de grandissement d'image |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2372446A2 (en, 2012) |
-
1976
- 1976-11-30 FR FR7636042A patent/FR2372446A2/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2372446A2 (fr) | 1978-06-23 |