Remote Lens Focusing System for an Aerial Camera.
DEPARTMENT OF THE NAVY WASHINGTON DC
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Document describes a system for remotely controlled focusing of a reconnaisance camera installed on an aircraft. The camera can be focused to any of a plurality of pre-selected focused position, each position having a unique corresponding binary coded decimal designator generated from a position correlated switch. When a change in focus in selected by depression of a push button switch, the resulting binary coded decimal designator for the desired focus position is added to the binary coded decimal designator from the optical switch. Differences between the two designators will cause a scanner to rotate and scan all optical switches, while simultaneously a gear mechanism adjusts the camera lens focus position to the position corresponding to that for the switch scan at that increment of time. When the scanner locates the activated switch whose binary coded decimal designator is the same as the designator of the selected pushbutton, scanning and focusing adjustments are halted. Author
- Cartography and Aerial Photography