X-ray image reading element

Abstract

Abstract PURPOSE:To obtain picture records with a small quantity of X-ray exposure dose and to use the HeNe laser, etc., for reading out, by installing a photoconductive body layer having the 1st high resistance photoconductive body layer, a long wavelength photosensitive body layer, and the 2nd high-resistance photoconductive body layer. CONSTITUTION:When an X-ray image is irradiated upon an Au electrode E4 under conditions where a positive electric potential is impressed upon an ''NESA'' electrode E3 side, the X-ray is converted into a visible light by an X-ray phosphor layer Z and negative electric charges are accumulated at the interface between an Se layer S and a parylene layer H, which are the foundation of a light irradiating section. When the voltage impression upon the electrodes E3 and E4 is interrupted after the negative electric charges are accumulated, the accumulated electric charges are maintained. When a laser light is scanned from the top of the electrode E3 with a rotary reflector M, the electron and the positive hole are coupled with each other by the action of the electric field produced by the accumulated electric charges and a voltage is produced between both ends of a resistance R by the displaced electric current. Therefore, a readout signal is obtained when they are detected.

Inventors

• 👤 Akitomo Tejima
• 👤 手島　章友
• 👤 Kohei Kiyota
• 👤 航平 清田

Bibliographic Details