A heavy metal fluoride glass composition range (in mol percent) consisting essentially of: (16-30)BaF2.(8-26)HfF4.(6-24)InF3 or GaF3.(4-16)CdF2.(6-24)YbF3.(4-22)ZnF2. In an alternative embodiment, a heavy metal fluoride glass composition range (in mol percent) comprises (16-30)BaF2.(8-26)HfF4.(6-24) of (0-24)InF3, (0-24)GaF3 and (0-19)AlF3.(1-16)CdF2.(6-24)YbF3.(4-26)ZnF2. A preferredheavy metal fluoride glass produced in accordance with the present invention comprises a composition (in mol %) and comprises about 26BaF2.18HfF4.7InF3.5GaF3.10CdF2.18YbF3.16ZnF2. A preferred heavy metal fluoride glass has maximum thickness of most preferably about 3 mm. Another preferredheavy metal fluoride glass comprises a composition (in mol %) and comprises about 26BaF2.18HfF4.12AlF3.10CdF2.18YbF3.16ZnF2.
US 6,177,372 B1
Iowa State University Research Foundation, Inc.
Martin, Steve W. and Huebsch, Jesse, "Preparation of high density heavy metal fluoride glasses with extended ultraviolet and infra red ranges, and such high density heavy metal fluoride glasses" (2001). Iowa State University Patents. 250.