0001193125-05-102878 10-Q 5 20050331 20050510 20050510 OSI SYSTEMS INC 0001039065 3674 330238801 CA 0630 10-Q 34 000-23125 05817314 12525 CHADRON AVE HAWTHORNE CA 90250 3109780516 12525 CHADRON AVENUE HAWTHORNE CA 90250 10-Q 1 d10q.htm FORM 10-Q EX-31.1 2 dex311.htm CERTIFICATION OF CEO EX-31.2 3 dex312.htm CERTIFICATION OF CFO EX-32.1 4 dex321.htm CERTIFICATION OF CEO EX-32.2 5 dex322.htm CERTIFICATION OF CFO