Mechanism for retracting and extending the lens carrier of a camera

摘要

Apparatus for retracting and extending the lens carrier of a camera comprises epicyclic gearing having a planetary gear mounted on a web and a driving pin mounted on the planetary gear for moving the lens carrier, and a stop for stopping the extension of the lens carrier at a picture-ready position, the center of the driving pin and the central axis of the web both lying, when the lens carrier engages the stop, on a line which extends at least approximately parallel to the lens axis.