The paper proposes a new chromatic-aberration-measuring method for geometric optics of a single converging lens based on the Foucault knife-edge test. An opto-mechatronics measurement system aided by a computer vision was built to automatically determine displaced positions of the knife-edge for discovering chromatic aberration components in the measured lenses. The evaluation results of its chromatic aberration elements measured by this system are appropriated with theoretical calculations.
Keyword
Chromatic aberration in a lens, Foucault knife-edge test, Abbe index, computer vision
