0001193125-05-023697 S-8 4 20050209 20050209 20050209 OSI SYSTEMS INC 0001039065 3674 330238801 CA 0630 S-8 33 333-122674 05589848 12525 CHADRON AVE HAWTHORNE CA 90250 3109780516 12525 CHADRON AVENUE HAWTHORNE CA 90250 S-8 1 ds8.htm FORM S-8 EX-4.1 2 dex41.htm AMENDED 1997 STOCK OPTION PLAN EX-5.1 3 dex51.htm OPINION OF LOEB & LOEB LLP EX-23.2 4 dex232.htm CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM