N7640 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – EB-CCD TV SCAN RATE TYPE : N7640, SLOW SCAN TYPE : N7220

EB-CCD _{INARY TV SCAN RATE TYPE : N7640}
LIM ^{SLOW SCAN TYPE : N7220}
PRE ^{For Low-Light-Level Imaging with high S/N ratio}
IMAGING COMPARISON
Using Resolution Test Chart
Commercial 2/3-inch CCD
s Imaging Conditions
Object illuminance: 0.1 lx
Lens: FUJINON-TV Zoom Lens/H6x 12.5R :F1.2/f2
EB-CCD N7640
OVERVIEW
The EB-CCD is an absolutely new high-sensitivity imaging
device that employs the “Electron Bombardment (EB)” effect for
image intensification. The EB-CCD basically consists of a
photocathode and a CCD chip arranged in parallel in a vacuum
tube. An optical image is converted at the photocathode into an
electron image, which is then accelerated and directly bom-
bards the CCD surface to produce electron multiplication. Even
a low-light-level image can be brought into view with a high S/N
ratio.
Two types of EB-CCD are available depending on the readout
method: the N7640 designed to operate at the TV scan rate
and the N7220 for slow scan readout. Both types are compact
and simple in structure, and deliver high sensitivity yet ensure
high S/N ratio. The EB-CCD will open up new applications as
the next generation of low-light-level imaging devices.
SENSITIVITY COMPARISON
(Calculated data)
TAPPB0068EA
1000
100
EB-CCD
N7640
NORMAL 2/3" CCD
10
1
200 300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)