Tōhō Kōgaku

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The company Tōhō Kōgaku (東邦光学) made the 85/2.7 lens mounted on the Orchid 6×6 SLR prototype in 1947.[1] That lens could be converted into a 120/4 tele lens via a converter, and other lenses were reportedly planned for the camera.[1]

The Toho Six 6×6 folder is also attributed to Tōhō Kōgaku (東邦光学),[2] and both the Toho Six and Planet, made in 1952–3, have TOHOKOGAKU on the back. This might be the same company or another one with the same name.


  1. 1.0 1.1 Ars Camera January 1947, pp.22–4.
  2. Kokusan kamera no rekishi, p.355 (item 613).


  • Ars Camera January 1947. "Mēkā ni kiku: Kokusan kamera no genjō. Nihon Shashin Kōgyō no shin'ei kogata ichigan-refu 'Ōkiddo'." (メーカーに訊く・国産カメラの現状・日本写真工業の新鋭小型一眼レフ”オーキッド”, Asking the makers: Current state of Japanese cameras. The "Orchid", latest small SLR by Nihon Shashin Kōgyō.) Pp.22–4.
  • 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.