OSI Systems, Inc.
OSI SYSTEMS INC (Form: EFFECT, Received: 04/28/2010 06:00:32)
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

NOTICE OF EFFECTIVENESS

Effective Date: April 27, 2010
Accession Number: 0001193125-10-051342
Submission Type: POS AM
CIK: 0001039065
Company Name: OSI SYSTEMS INC
File Number: 333-119704