GLASS OPTICAL PRODUCTS

Brand	Owner	Address	Description
GELSIL	GELTECH, INC.	3267 PROGRESS DRIVE ORLANDO FL 32826	GLASS OPTICAL PRODUCTS, NAMELY MIRRORS AND LENSES;GEL SEAL;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An optical glass being free of lead and fluorine, having a low glass transition temperature permitting press-molding with a mold formed of stainless steel and having high climate resistance includes an optical glass comprising, by mol %, 25 to 44% of P2O5, 10 to 40% of a total of Li2O, Na2O and K2O, 5 to 40% of ZnO, 1 to 35% of BaO and at least one components selected from Nb2O5, Bi2O3 and WO3, having a glass transition temperature (Tg) of 370Â° C. or lower and being free of lead and fluorine and an optical glass which is free of lead and fluorine, has a mass loss ratio of less than 0.25% when immersed in pure water, and has a glass transition temperature (Tg) of 370Â° C. or lower.