GB2252101B - Optical and ophthalmic glass with refractive index nd at least nd 1.68 and abbe number vd at least 41.6 - Google Patents
Optical and ophthalmic glass with refractive index nd at least nd 1.68 and abbe number vd at least 41.6Info
- Publication number
- GB2252101B GB2252101B GB9200856A GB9200856A GB2252101B GB 2252101 B GB2252101 B GB 2252101B GB 9200856 A GB9200856 A GB 9200856A GB 9200856 A GB9200856 A GB 9200856A GB 2252101 B GB2252101 B GB 2252101B
- Authority
- GB
- United Kingdom
- Prior art keywords
- optical
- refractive index
- abbe number
- ophthalmic glass
- ophthalmic
- Prior art date
- 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 - Fee Related
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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/07—Glass compositions containing silica with less than 40% silica by weight containing lead
- C03C3/072—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron
- C03C3/074—Glass compositions containing silica with less than 40% silica by weight containing lead containing boron containing zinc
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/062—Glass compositions containing silica with less than 40% silica by weight
- C03C3/064—Glass compositions containing silica with less than 40% silica by weight containing boron
- C03C3/068—Glass compositions containing silica with less than 40% silica by weight containing boron containing rare earths
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)
- Glass Compositions (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4101793 | 1991-01-23 | ||
DE19914136975 DE4136975A1 (en) | 1991-01-23 | 1991-11-11 | OPTICAL AND OPHTHALMIC GLASS WITH A BREAK VALUE ND> = 1.68 AND A NUMBER (NY) (DOWN ARROW) D (DOWN ARROW)> = 41.6 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9200856D0 GB9200856D0 (en) | 1992-03-11 |
GB2252101A GB2252101A (en) | 1992-07-29 |
GB2252101B true GB2252101B (en) | 1994-06-29 |
Family
ID=25900420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9200856A Expired - Fee Related GB2252101B (en) | 1991-01-23 | 1992-01-15 | Optical and ophthalmic glass with refractive index nd at least nd 1.68 and abbe number vd at least 41.6 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE4136975A1 (en) |
FR (1) | FR2671793B1 (en) |
GB (1) | GB2252101B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2872899B2 (en) * | 1993-11-26 | 1999-03-24 | 株式会社オハラ | Optical glass |
US6413894B1 (en) * | 1998-04-30 | 2002-07-02 | Hoya Corporation | Optical glass and optical product |
FR2789071B1 (en) * | 1999-02-03 | 2002-03-22 | Corning Sa | MINERAL GLASS (# 1.7), ADVANTAGEOUSLY REINFORCED BY ION EXCHANGE; OPHTHALMIC LENSES IN SAID GLASS |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3026605C2 (en) * | 1980-07-14 | 1983-07-07 | Schott Glaswerke, 6500 Mainz | Acid-proof, hydrolytically stable optical and ophthalmic borosilicate glass of low density |
BR8605356A (en) * | 1985-11-29 | 1987-08-04 | Corning Glass Works | GLASS FOR OPTICAL AND / OR OPHTHALMIC APPLICATIONS |
ES2043829T3 (en) * | 1987-08-14 | 1994-01-01 | Corning Glass Works | LOW DENSITY GLASSES, HIGH INDEX AND CHEMICALLY DURABLE. |
-
1991
- 1991-11-11 DE DE19914136975 patent/DE4136975A1/en active Granted
-
1992
- 1992-01-15 GB GB9200856A patent/GB2252101B/en not_active Expired - Fee Related
- 1992-01-22 FR FR9200676A patent/FR2671793B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2252101A (en) | 1992-07-29 |
DE4136975A1 (en) | 1992-07-30 |
GB9200856D0 (en) | 1992-03-11 |
DE4136975C2 (en) | 1993-03-04 |
FR2671793A1 (en) | 1992-07-24 |
FR2671793B1 (en) | 1995-03-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20050115 |