BIREFRINGENT OPTICAL CORRELATOR

摘要

A birefringent optical correlator having a light source, a pair of ultrasonic delay lines and a photosensitive device. The birefringent optical correlator does not contain apertures or polarizers between the delay lines and therefore passes the entire image therethrough. A polarizer is located before the first delay line and after the second delay line in order to separate the modulated or diffracted light. Thus, the birefringent optical correlator requires substantially little source light intensity and mechanical alignment.