Q:
What is Super HAD CCD camera, does Wolfcom cameras
use Super HAD CCD?
A:
All Wolfcom W series cameras come with Super HAD CCD
technology, or optionally having Ex-view CCD.
|
■diagram
of old and new Micro-lens on a Super HAD CCD
chip |
|
A.
loss more light on blue zone as shown |
B.
Traditional On Chip Micro-lens |
|
 |
 |
|
C.
New
Micro-lens will correct more light |
D.
New
Micro-lens and better shielding
|
|
 |
 |
Wolfcom
CCD camera selling today on market are almost all
using Super HAD technology. Super HAD will
provide 2 times better sensitivity and 6 db better
smear rejection ratio then former old type CCD. Two
micro lens on top of each photo diode will collect
more photon from incoming light then old CCD.
Wolfcom W series camera using mainly Sony CCD chip
for best color rendering and good dynamic range.
Sony
Ex-view CCD chips Do have 4 times better sensitivity
on near infrared zone ( 800~ 900 nm). compare to
Super HAD, However this advantage If handled proper
it will be excellent for night vision. But if not
handled properly, it will become a draw background,
because the infrared will cause color distortion
and blurred a image due to basic physics that
infrared will focus on deeper location and cause
hologram image.
