Kanto Optical Corp. (関東光学株式会社, Kantō Kōgaku Kabushiki Kaisha) is a Japanese company that made the Amiflex 6×6 TLR in 1953–4.
"Kantō" loosely means East Japan, or the area of Tokyo as opposed to Kyoto and Osaka.
For some reason, Kokusan kamera no rekishi also attributes the Daido Semi to Kanto.
It is unknown if this company is related with the Ami 4.5×6 folder advertised during World War II.
Source / further reading
- Asahi Camera (アサヒカメラ) editorial staff. Shōwa 10–40nen kōkoku ni miru kokusan kamera no rekishi (昭和10–40年広告にみる国産カメラの歴史, Japanese camera history as seen in advertisements, 1935–1965). Tokyo: Asahi Shinbunsha, 1994. ISBN 4-02-330312-7.