Canon Inc. (????????, Kyanon Kabushiki-gaisha?) is a Japanese multinational corporation specialized in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers, computer printers and medical equipment. It is headquartered in Ota, Tokyo, Japan. Canon has a primary listing on the Tokyo Stock Exchange and is a constituent of the TOPIX index. It has a secondary listing on the New York Stock Exchange. At the beginning of 2015, Canon was the tenth largest public company in Japan when measured by market capitalization. The company was originally named Seikikogaku kenkyusho (jpn. ???????, Precision Optical Industry Co. Ltd.). In 1934 it produced the Kwanon, a prototype for Japan’s first-ever 35 mm camera with a focal plane based shutter. In 1947 the company name was changed to Canon Camera Co., Inc., shortened to Canon Inc. in 1969. The name Canon comes from Buddhist bodhisattva Guan Yin (??, Kannon in Japanese), previously transliterated as Kuanyin, Kwannon, or Kwanon in English.