Display of manifestation

摘要: There is disclosed apparatus and a method for producing realtime (instantaneous), two-dimensional display of manifestation which may specifically be live scene or an image on transparency or, more generally, system signals such as that produced by phased array radar. A plurality transducers energized from radio-frequency electrical source connected to opto-acoustic medium, example block quartz, through linear photo-acoustic elements whose impedance can varied in accordance with the radiation impinging them. The are insulated each other. scanned linearly light scanning lines impinged sequence moving acoustic pattern medium. Coherent laser projected medium intermittently synchronism complete patterns produce visual display.