  We designed new photodiodes sensors including current mirror amplifiers.
These photodiodes have been fabricated using a CMOS 0.6 micrometers process
from Austria Micro System (AMS). The Photodiode areas are respectiveley 1mm x
1mm and 0.4mm x 0.4mm with fill factor 98 % and total chip area is 2 square
millimetres. The sensor pixels show a logarithmic response in illumination and
are capable of detecting very low blue light (less than 0.5 lux) . These
results allow to use our sensor in new Gamma Camera solid-state concept.
