Ōki Kōgaku Seiki Seisaku-sho (大木光学精機製作所, i.e. "Ōki precision machinery factory") was a Japanese company based in Tokyo, Arakawa. It was the producer of two cameras during the Second World War, the Oko Six and Oko Semi. It probably made the four-element Oko or Okor lenses mounted on these cameras. It also made Hildar and Oscar lenses for the Semi Rosen U and Primo distributed by Ōsawa Shōkai.
List of cameras[]
- Oko Six I and II (6×6 folder)
- Oko Semi (4.5×6 folder)
List of lenses[]
- Hildar 75/4.5 on the Semi Rosen U, also reported on an example of the Semi Lucky
- Hildar 75/3.5 on the Semi Rosen U
- Oscar 75/4.5 on the Primo I
- Oscar 75/3.5 on the Primo II
- Okor (or Oko) 75/3.5 on the Oko Six and Oko Semi
The Hildar and Oscar lenses have three elements and are probably identical. The Oko or Oko
References/External Links[]
http://camera-wiki.org/wiki/%C5%8Cki
All credit goes back to Camera Wiki Org for i do not own any of these information nor the pictures provided in this page