0000927016-02-004687 DEF 14A 1 20021101 20020925 II-VI INC 0000820318 3827 251214948 PA 0630 DEF 14A 34 000-16195 02772369 375 SAXONBURG BLVD SAXONBURG PA 16056 724-352-4455 375 SAXONBURG BLVD SAXONBURG PA 16056 DEF 14A 1 ddef14a.txt NOTICE AND PROXY STATEMENT