Autofocus television camera with means for reading and comparing partial images to derive a focus indication

摘要: A camera for recording television, photographic or cinematographic images comprises an automatic focusing device. The information required is obtained with the aid of a partial blocking arrangement two different portions optical path leading to electronic image sensor. These are located on opposite sides central axis. After signals during periods have been compared each other, adjusted until signal correlation optimized. To produce having both undisturbed scene and focusing, while using only one sensor, this includes charge transfer device pickup member, storage shift register member. operates television field period TV in following sequence: TVS, TFO, first TAS, TF1, second TBS, TF2.