JPS548484B2 - - Google Patents
Info
- Publication number
- JPS548484B2 JPS548484B2 JP8624675A JP8624675A JPS548484B2 JP S548484 B2 JPS548484 B2 JP S548484B2 JP 8624675 A JP8624675 A JP 8624675A JP 8624675 A JP8624675 A JP 8624675A JP S548484 B2 JPS548484 B2 JP S548484B2
- Authority
- JP
- Japan
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S501/00—Compositions: ceramic
- Y10S501/90—Optical glass, e.g. silent on refractive index and/or ABBE number
- Y10S501/903—Optical glass, e.g. silent on refractive index and/or ABBE number having refractive index less than 1.8 and ABBE number less than 70
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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742435555 DE2435555C2 (de) | 1974-07-24 | 1974-07-24 | Optisches glas des systems sio tief 2 -b tief 2 o tief 3 -bao-la tief 2 o tief 3 -zro tief 2 mit der optischen lage nd=(1,650+-2)x10 hoch -3 und vd=55,5+-1,0, das sich durch hohe chemische bestaendigkeit und geringe kristallisationsneigung auszeichnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5134914A JPS5134914A (https=) | 1976-03-25 |
| JPS548484B2 true JPS548484B2 (https=) | 1979-04-16 |
Family
ID=5921375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8624675A Expired JPS548484B2 (https=) | 1974-07-24 | 1975-07-16 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3970466A (https=) |
| JP (1) | JPS548484B2 (https=) |
| DE (1) | DE2435555C2 (https=) |
| FR (1) | FR2279685A1 (https=) |
| GB (1) | GB1475642A (https=) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2623683C3 (de) * | 1975-06-02 | 1979-10-04 | Hoya Glass Works, Ltd., Tokio | Glas für Augenlinsen mit einem Brechungsindex von mindestens 40 und einem spezifischen Gewicht von nicht mehr als 3,lg/cm3 |
| JPS55151601A (en) * | 1979-05-15 | 1980-11-26 | Minolta Camera Co Ltd | Pentagonal prism for camera finder |
| DE2952705C2 (de) * | 1979-12-29 | 1982-03-18 | Schott Glaswerke, 6500 Mainz | Optisches Glas mit der optischen Lage n↓D↓ ist 1,62+-(1,5 mal 10-2), V↓D↓ ist 59,5+-1,0, mit hoher chemischer Beständigkeit und geringer Kristallisationsneigung aufbauend auf dem an sich bekannten System SiO↓2↓-B↓2↓O↓3↓-La↓2↓O↓3↓-SrO- |
| DE3331106C2 (de) * | 1983-08-30 | 1985-09-19 | Schott Glaswerke, 6500 Mainz | Optisches Glas mit einem Brechtwert ≥1.60 und einer Abbezahl ≥58, mit hoher chemischer Stabilität und Entmischungs- und Kristallisationsfestigkeit im System SiO↓2↓-B↓2↓O↓3↓-SrO-La↓2↓O↓3↓-Al↓2↓O↓3↓-BaO-Alkalioxid-F |
| JPS6291190A (ja) * | 1985-10-17 | 1987-04-25 | Ajinomoto Co Inc | 発酵法によるｌ−アミノ酸の製造法 |
| US5371048A (en) * | 1993-10-18 | 1994-12-06 | Corning Incorporated | Dense barium crown optical glasses |
| ATE352526T1 (de) * | 2000-06-05 | 2007-02-15 | Ohara Kk | Optische gläser die unter betriebsbedingungen bei uv-belichtung in bezug auf ihren brechungsindex möglichst stabil sind |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1496548B2 (de) * | 1965-09-04 | 1971-09-30 | Jenaer Glaswerk Schott & Gen , 6500 Mainz | Kristallisationsstabile thoriumoxid und berylliumoxid freie optische glaeser |
-
1974
- 1974-07-24 DE DE19742435555 patent/DE2435555C2/de not_active Expired
-
1975
- 1975-06-05 GB GB2421375A patent/GB1475642A/en not_active Expired
- 1975-07-16 JP JP8624675A patent/JPS548484B2/ja not_active Expired
- 1975-07-18 US US05/597,092 patent/US3970466A/en not_active Expired - Lifetime
- 1975-07-23 FR FR7522934A patent/FR2279685A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5134914A (https=) | 1976-03-25 |
| GB1475642A (en) | 1977-06-01 |
| DE2435555B1 (de) | 1976-01-22 |
| FR2279685A1 (fr) | 1976-02-20 |
| DE2435555C2 (de) | 1976-08-26 |
| US3970466A (en) | 1976-07-20 |
| FR2279685B1 (https=) | 1978-07-28 |