FR2504515B1 - - Google Patents
Info
- Publication number
- FR2504515B1 FR2504515B1 FR8108296A FR8108296A FR2504515B1 FR 2504515 B1 FR2504515 B1 FR 2504515B1 FR 8108296 A FR8108296 A FR 8108296A FR 8108296 A FR8108296 A FR 8108296A FR 2504515 B1 FR2504515 B1 FR 2504515B1
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Glass Compositions (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8108296A FR2504515A1 (fr) | 1981-04-27 | 1981-04-27 | Procede pour l'obtention d'un verre mineral a gradient d'indice, et article, en particulier lentille ophtalmique, en un tel verre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8108296A FR2504515A1 (fr) | 1981-04-27 | 1981-04-27 | Procede pour l'obtention d'un verre mineral a gradient d'indice, et article, en particulier lentille ophtalmique, en un tel verre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2504515A1 FR2504515A1 (fr) | 1982-10-29 |
| FR2504515B1 true FR2504515B1 (enExample) | 1984-08-24 |
Family
ID=9257790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8108296A Granted FR2504515A1 (fr) | 1981-04-27 | 1981-04-27 | Procede pour l'obtention d'un verre mineral a gradient d'indice, et article, en particulier lentille ophtalmique, en un tel verre |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2504515A1 (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61222943A (ja) * | 1985-03-29 | 1986-10-03 | Hoya Corp | 屈折率分布型レンズの製造法 |
| DE69613270T2 (de) * | 1995-04-19 | 2002-05-16 | Corning Inc., Corning | Verfahren und Vorrichtung zum Herstellen eines Stabes aus einem Material mit durchschnittlich einem veränderlichem Gradient |
| EP0738689B1 (en) * | 1995-04-19 | 2003-07-02 | Corning Incorporated | Device and method for shaping molten glassy material into rods |
| CN116514393A (zh) | 2017-10-27 | 2023-08-01 | 株式会社 尼康 | 光学玻璃、使用其的光学元件、接合透镜、光学系统、照相机用更换镜头及光学装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023951A (en) * | 1974-09-25 | 1977-05-17 | Imperial Chemical Industries Limited | Treatment of glass |
| US4065283A (en) * | 1975-03-22 | 1977-12-27 | Hoya Glass Works, Ltd. | Method for making a glass-based soft-edged aperture filters |
-
1981
- 1981-04-27 FR FR8108296A patent/FR2504515A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2504515A1 (fr) | 1982-10-29 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |