日本国内特許 (実用新案) 公報にみるカメラの露出調節の動向

抄録

Exposure mechanisms of a camera have been rapidly developped after the war.
The original type of this exposure adjustment mechanisms of the camera was Semi Automatic Type (manual adjustment mechanisms by means of linking mechanisms in accordance with the indication of exposuremeter).
And Automatic Type of exposure adjustment mechanisms called E.E.(Electric Eye) appeared.
Now Electric Shutter Camera is the most popular.
Further more the electric shutter camera with a flash photographic apparatous is popular as Full Automatic Camera.
This paper reports technical tendency of exposure adjustment of camera in Japanese patent and/or utility model publications with their statistical graphs and examples.