Updates

Rapiscan Systems Receives Approximately $6 Million in New Orders for Advanced Personnel Screening Solution

Rapiscan Systems, a leading supplier of security inspection systems, today announced that is was awarded multiple customer contracts with a combined value of approximately $6 million for its Rapiscan Secure 1000 personnel screening system. The value of these orders raises the total value of orders received for the Rapiscan Secure 1000 system in the Company’s fiscal year ending June 30, 2010, to approximately $50 million.

Ajay Mehra, President of Rapiscan Systems, stated, “Following on from our recently announced order from the US Transportation Security Administration, these most recent contract awards from multiple customers demonstrate the growing demand for the Secure 1000 product line globally. We are seeing significant customer interest in the Rapiscan Secure 1000, not only in aviation but for other security applications due to the systems proprietary technology which offers customers the best combination of security and operational efficiency, as it can detect small, non-metallic concealed threats very quickly and with excellent image resolution. This means that there is better threat detection, fewer false alarms and a reduced need for physical patdown searches.”

Used by aviation authorities, military organizations, homeland security, and police and correctional facilities, the Rapiscan Secure 1000 family of body scanners is one of the world’s most widely deployed advanced people screening solutions. The Rapiscan Secure 1000 family of technologies has been approved by regulators worldwide and is being deployed at airports globally. Its proprietary backscatter technology and image processing software enables the system to produce high-resolution images that allow an operator to easilyentify concealed threat and contraband items. It iseal for high security environments because unlike traditional metal detectors, it can detect organic and non-metallic items (e.g. plastic explosives, liquids, narcotics, ceramic weapons), as well as metallic threat items. Using the Rapiscan Secure 1000’s imaging capability, security screeners can detect concealed objects without a physical patdown search. By reducing false alarms and by making it easier to pinpoint the location of concealed items, the Rapiscan Secure 1000 also significantly improves checkpoint throughput and staffing efficiency.

About Rapiscan Systems Rapiscan Systems, a division of OSI Systems, Inc. is a leading supplier of security inspection solutions utilizing X-ray and gamma-ray imaging, and advanced threatentification techniques such as neutron and diffraction analysis. The company's products are sold into four market segments; Baggage and Parcel Inspection, Cargo and Vehicle Inspection, Hold Baggage Screening and People Screening. The company has an installed base globally of more than 70,000 security and inspection systems. The Rapiscan Systems product line is manufactured at four locations and supported by a global support service network.  The company was recognized for its market leadership with one of the United Kingdom's most prestigious distinctions The Queen's Awards for Enterprise and named by Frost & Sullivan as the 2008 North American Homeland Security Inspection and Screening Company of the Year.  For more information on Rapiscan Systems, please visit www.rapiscansystems.com.

For more information, contact: Amy Talley Jefferson Communications Phone: 703.323.8939 Email: atalley@jeffersoncomm.com Website: www.jeffersoncomm.com

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such statements include information regarding the company's expectations, goals or intentions about the future, including, the Company's contracts to provide its inspection systems. The actual results may differ materially from those described in or implied by any forward-looking statement. In particular, the timing, and delivery of the systems may not ultimately remain in line with the Company's current expectations. Other important factors are set forth in the Securities and Exchange Commission filings OSI Systems, Inc. All forward-looking statements speak only as of the date made, and the company undertakes no obligation to update these forward-looking statements.