| abstract |
IN ORDER TO OBTAIN A MEMORY EFFECT IN THE IMAGE INTENSIFYING TUBES 10, THE INVENTION PROVIDES FOR EQUIPPING THESE TUBES WITH AN OUTPUT SCREEN 22 CONSTITUTED BY AN ELECTROLUMINESCENT CELL, HAVING THE PROPERTY OF EMITTING A VISIBLE LIGHT WHEN A ELECTRICAL TENSION IS CREATED BETWEEN THESE FACES, AND EQUIPPED WITH HYSTERESIS, THIS SCREEN ALLOWS, UNDER THE ACTION OF AN APPLIED VOLTAGE (SOURCE S), TO CONSERVE THE IMAGE ADDRESSED BY THE ELECTRON BEAM AND TO MAKE IT REAPPEAR IN THE CHOSEN INSTANT, FOR A DETERMINED DURATION. APPLICATION TO RADIOLOGY. |