Laser projector for remote reproduction of TV images - has optical system with intensity modulation and amplification for central processor

摘要

The laser projection system allows remote writing of texts and reproduction of figures. It can be used in a television transmitter and receiving system where only subscribers wishing to receive for example advertising material can do so by tuning at the correst instant. It will involve the selective projection of light reflecting structures from a laser beam. It consists of a laser beam light source with a splitter. The beam is fed through a XYZ and position optical system. It is subjected to intensity modulation. There is also deflection and modulation amplification. The amplifiers can be controlled manually or automatically. There is also a central processing system which will read out the stored data which are fed to a digital-analogue converter and then to a central processing system.