Finnegan, Henderson, Farabow, Garrett, and Dunner
Variable focus camera
 A variable focus camera includes a photographing lens constituted by at least two components, and changes the position of a magnification adjusting lens of a finder by a cam barrel of the photographing lens. In this camera, at least two magnification correction cams for extending the components of the photographing lens and having a focal-point correction function are formed on the cam barrel, and a magnification of the photographing lens is caused to coincide with a magnification of the finder by the magnification correction cams. 
Konica Corporation
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G03B G03B G03B
additional inventional inventional
Masami Kazuhiro Yoshinobu
Fujita Nakanishi Sameshima