0001193125-11-255086 DEFA14A 6 20110923 20110923 20110923 II-VI INC 0000820318 3827 251214948 PA 0630 DEFA14A 34 000-16195 111104768 375 SAXONBURG BLVD SAXONBURG PA 16056 724-352-4455 375 SAXONBURG BLVD SAXONBURG PA 16056 DEFA14A 1 d221643ddefa14a.htm NOTICE & ACCESS MATERIAL GRAPHIC 2 g221643defa_pg2.jpg GRAPHIC GRAPHIC 3 g221643defa_pg3a.jpg GRAPHIC GRAPHIC 4 g221643defa_pg3b.jpg GRAPHIC GRAPHIC 5 g221643defa_pg4.jpg GRAPHIC GRAPHIC 6 g221643defa_pg5.jpg GRAPHIC