Company Information

Company Outlines

Company NameMitsui Optical Manufacturing Co., Ltd.
AddressesHead Office: 2-3-3 Wada, Suginami-ku, Tokyo
Akita Factory: 120-21 Aza-Nanamagari-dai, Kawahetojima, Akita-shi, Akita
Fukushima Factory: 10-243, Aza-Oyama, Oaza-Iitoyo, Ten-ei-mura, Iwase-gun, Fukushima
Capital10,000,000 yen
Representative DirectorTatsuro Mitsui
Number of Employees69 (52 men, 17 women)
Main BusinessesPolishing of various kinds of optical prisms, vapor-deposition, coating, cementing, bonding and assembling of optical devices
Main BanksThe Mitsubishi Tokyo UFJ Bank (Shinjyuku Fukutoshin Branch), Shoko Chukin Bank (Shinjyuku Branch) , Tokyo City Trust Bank (Honancho Branch)
Main CustomersNagano Olympus Co., Ltd., Cosina Co., Ltd., Sony EMCS Corp., Panasonic Corp.
Affiliated CompanySpecwell Corporation

Company History

1951At the current premise of the head office, Genzo Mitsui started the business of polishing flat glass surfaces for making mirrors.
1952Started manufacturing polo-prisms for binoculars.
1953Started manufacturing polo-prism binoculars for export markets.
1962Commenced manufacturing high-performance prisms.
1973Constructed Fukushima Factory in Ten-ei-mura, Fukushima.
1980Built the current head office building.
1991Constructed Akita Factory in the Rinkai-kukou Industrial Zone, Akita.
2004Constructed a new building for Fukushima Factory, Akita Factory obtained ISO14001 certification.
2005Fukushima Factory obtained ISO14001 certification.
2006Akita Factory obtained ISO9001 certification.
2007Commenced coating business. Head office and Fukushima Factory obtained ISO9001 certifications.
2013Launched multiple-plate prism unit manufacturing business.
2014Started business of making optical contact products. Head office obtained ISO14001.