Write-through on direct view bistable storage tubes

In Write-through on a direct view bistable storage tube (DVBST), the writing beam excites the storage phosphor but does not cause storage. The write-through image luminance of a DVBST is dependent upon repetition rate (refresh rate), beam voltage, phosphor efficiency, low voltage secondary emission characteristics, beam current density, and stored writing speed. Relatively good agreement between empirical and theoretical studies was achieved. The amount of information (vector-centimeters) that can be presented at an acceptable brightness level is inversely proportional to the repetition rate and directly proportional to the write-thru vector speed. The viewability and quantity of information that can be presented during write-through can be increased with higher beam voltage and higher write-through vector speed.