An Olympus staff demonstrates the videoscope function of Olympus current gastrointestinal endoscopy system Evis Exera II, which is lit by a LED light, at an unveiling ceremony in Tokyo March 21, 2012. Olympus Corp's president-nominee said on Wednesday that the medical equipment and camera maker must continue to develop its core medical business in order to rebuild after being involved in one of Japan's worst corporate scandals. REUTERS/Kim Kyung-Hoon (JAPAN - Tags: SCIENCE TECHNOLOGY BUSINESS)