Melting conditions for photochromic glasses of the ophthalmic type have been investigated. Ophthalmic specifications were attained by replacing part of the alkalis by PbO and BaO for matching refractive index and Abbe values.
Origin
Central Glass And Ceramic Research Institute, Calcutta
Journal Title
Trans Indian Ceram Soc 1989 48 1 1-4, 10
Sector
Special Glass
Class
S 534