Title :
Evaluation of light sources for TDI polysilicon electrode CCD document scanners
Author :
Schell-Sorokin, A.J. ; Lynch, G.W.
Author_Institution :
IBM Thomas J. Watson Research Center, Yorktown Heights, NY
fDate :
3/1/1981 12:00:00 AM
Abstract :
The use of blue or green fluorescent lamps for illuminators in front illuminated polysilicon electrode charge-coupled device (CCD) document scanners operated in the time delay and integration (TDI) mode overcomes the low blue responsivity of this device. A simple method is presented to compare quantitatively the response of this scanner with that of the human eye.
Keywords :
Brightness; Charge coupled devices; Delay effects; Electrodes; Fluorescent lamps; Humans; Light sources; Phosphors; Reflectivity; Testing;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/T-ED.1981.20340
