| 摘要 |
<p>Optical fluorphosphate glasses based on Ba(PO3)2, Al(PO3)3, alkaline earth fluorides and AlF3, which have a refraction coefficient ne of between 1.47 and 1.50, an Abbe coefficient of ωe between 85 and 80, as well as a positive anomalous partial dispersion value Δωe of between +17 and + 22. They consist of the following (in atom-%) 0.5-3 Mg, 8-10 Ca, 12-20 Sr, 9-12 Ba, 7-9 Al, 5-9 P, 8-12 O and 35-38 F. In addition Ti, Na, K and H may be present. The improved physic-chemical parameters (expansion coefficient, transformation temperature, density, Knoop-hardness) as well as the transmission characteristics are indicated. Finally, a description is given of a production process for these optical glasses.</p> |
