A Simple Sweeping-Image Camera (Chronograph) with 10-8 Second Resolution

摘要

A sweeping-image camera design of flexible application and easy construction is described. It is equally useful for bread-board, optical bench, or completely engineered construction. The heart of this camera is the optical train which consists of a collimator lens that renders the light from the image points into parallel beams, a rotating mirror to sweep these beams in an area and a box camera set at infinity focus to receive the reflected beams. The sweeping light beams form images which more across the film plane while at the same time remaining in sharp focus. The collimator lens may have either the subject being studied as an object or its image whose extent can conveniently be limited by a slit.