Olympus Corporation (オリンパス株式会社, Orinpasu Kabushiki-gaisha?) is a Japan-based manufacturer of optics and reprography products. Olympus was established on 12 October 1919, initially specializing in microscope and thermometer businesses. Olympus enjoys a virtual stranglehold of the world market in gastro-intestinal endoscopes. Its has roughly 70% share of the global market whose estimated valued at US$2.5 billion. Its global headquarters are in Shinjuku, Tokyo, Japan.