Kodak DirectView CR 825 - COLLECTOR and PHOTOMULTIPLIER TUBE (PMT)

THEORY GUIDE Optical
10DEC05
TG4825-1
Page
62 of 120
COLLECTOR and PHOTOMULTIPLIER TUBE (PMT)
The COLLECTOR and the PMTs:
• provide the collection of the blue light emitted from the PHOSPHOR SCREEN
• measure the brightness of the blue light
• change the measurement of brightness to digital format
(1 of 2)
PMT
PHOSPHOR SCREEN
BLUE FILTER
LIGHT COLLECTOR
red laser light
signal
analog
H194_5009GC
blue light