Methods of making fluoride crystal and fluoride crystal lens

Details Methods of making fluoride crystal and fluoride crystal lens Methods of making fluoride crystal and fluoride crystal lens

2005-04-12

2005-04-12

Kunemund, Robert (Department: 1765)

Single-crystal, oriented-crystal, and epitaxy growth processes;

Processes of growth from liquid or supercritical state

Havin growth from molten state

C117S081000, C117S082000, C117S083000, C117S940000

Reexamination Certificate

active

06878201

ABSTRACT:
A method of making a fluoride crystal suitable for use as an optical element is disclosed. The method includes a mixing step for mixing a prepared raw fluoride material with a scavenger to yield a fluoride mixture. In a preliminary step, the fluoride mixture is formed into a fluoride disk. A grown fluoride crystal is formed by melting and then gradually cooling the fluoride disk in a cylindrical crucible. The grown fluoride crystal is then annealed.

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