公开(公告)号：DE10296958T5

公开(公告)日：2004-04-29

申请号：DE10296958

申请日：2002-05-31

Applicant: CORNING INC CORNING

Inventor： RETHERFORD REBECCA ,  SABIA ROBERT ,  SOKIRA VINCENT P

IPC: B24B57/02 ,  B24B1/00 ,  B24B13/00 ,  B24B37/04 ,  C09G1/02 ,  B24B7/22

Abstract: The invention relates to optical fluoride crystals, and particularly to optical fluoride crystals such as calcium fluoride, which have high transmission levels to below 200 nm light, such as produced by excimer lasers. In particular the invention relates to making optical fluoride crystals with improved transmission surfaces. The invention relates to the elimination of mid-spatial frequency roughness 1-1000 mum spatial wavelengths and high-spatial frequency