Topcon Corporation (株式会社トプコン, Kabushiki-gaisha Topukon) is a Japanese manufacturer of optical equipment for ophthalmology and surveying.

Initially, the company produced surveying instruments, binoculars and cameras, as well as sniper scopes used mainly by the Army.

[5] In April 1933, TOPCON built their head offices and main factory at 180, Shimura-motohasunuma-cho, Itabashi-ku, Tokyo.

[6] In December 1947, TOPCON started selling lens meters and an Ophthalmic and Medical Instruments business.

[citation needed] 1957—released its first single-lens reflex camera, the Topcon R,[7] with semi-auto lens and an interchangeable finder.

October 1994—Delivered a nationwide GPS continuous observation system to Geographical Survey Institute, Ministry of Construction, Japanese Government.

July 2005—Transferred from part of the Hoya Corporation Vision Care Company's ophthalmic instruments segment in Japan.

May 2007—Business rights for mobile control (navigation systems, ITS and others) transferred to U.S. subsidiary from Javad Navigation Systems, Inc.[11] February 2008—Conducted a takeover bid for shares of Sokkia Co., Ltd. and made it a subsidiary to enhance competitiveness of the positioning business in the global market.

March 2010—Acquired InlandGEO Holding S.L., the largest dealer in Spain, to enhance sales channels for precision agricultural systems in the European, Middle-Eastern, and African markets.

[16] April 2018—Established Topcon Healthcare Solutions, Inc. a medical software company based in Oakland, New Jersey.

July 2021—Topcon Corporation acquired VISIA Imaging S.r.l, an ophthalmic device manufacturer headquartered in suburban Florence, Italy.

[17] Tokyo Kogaku produced cameras, beginning with a 6×4.5 cm medium format model, Lord in 1937.

Round about 1973 the production of the SLR IC-1 AUTO started; „IC“ means „Integrated Circuit“, used for aperture control.

In August 2000, Topcon acquired JPS Inc., of San Jose, California, a provider of precision GPS and GPS/GLONASS products.

Topcon ophthalmic (eye) machines are widely used in many health centers in Western Europe, and are often interconnected to their surrounding IT systems through the RS232 protocol.