Improved acousto-optic laser scanner guidance system

The guidance of remote bodies is increasing in importance. The use of wire or similar links has obvious drawbacks, and radio-frequency systems are prone to interference. The laser generates a low divergence beam, which may have a high power density, that may be transmitted into a pattern that can provide information to the guided body. Several systems exist which achieve this, but most require a second synchronisation source. The scanned pattern described is self synchronising, but is such that it cannot easily be generated using a mechanical system. The scanner is a solid-state acousto-optic system