Of all the robots that end up supporting humans, those that carry out the dirty, dull and dangerous tasks will be the most commercially successful, the president of an American robot maker said Thursday in Tokyo.

"Our goal is to change the world we live in, to solve very important and challenging problems that need to be solved," said Colin Angle, chief executive officer of iRobot Corporation, at the Foreign Correspondents' Club of Japan in Tokyo.

Angle, a robotics expert and cofounder of the Massachusetts-based home and military robot maker, is in Japan to attend CEATEC Japan 2010, a five-day electronics and information technology fair that kicked off Tuesday in Chiba Prefecture.