0001193125-05-023565 10-Q 5 20041231 20050209 20050209 OSI SYSTEMS INC 0001039065 3674 330238801 CA 0630 10-Q 34 000-23125 05589189 12525 CHADRON AVE HAWTHORNE CA 90250 3109780516 12525 CHADRON AVENUE HAWTHORNE CA 90250 10-Q 1 d10q.htm FORM 10-Q (12/31/2004) EX-31.1 2 dex311.htm CERTIFICATION OF CHIEF EXECUTIVE OFFICER EX-31.2 3 dex312.htm CERTIFICATION OF CHIEF FINANCIAL OFFICER EX-32.1 4 dex321.htm CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO SECTION 906 EX-32.2 5 dex322.htm CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO SECTION 906