icx409ak Sony Electronics, icx409ak Datasheet - Page 11

• Manufacturer Part Number: icx409ak
• Description: Diagonal 6mm Type 1/3 Ccd Image Sensor For Pal Color Video Cameras
• Manufacturer: Sony Electronics

1) Standard imaging condition I:
2) Standard imaging condition II:
1. Sensitivity
2. Sensitivity ratio
3. Saturation signal
4. Smear
5. Video signal shading
6. Uniformity between video signal channels
Sm = 20 × log
Definition of standard imaging conditions
Use a pattern box (luminance 706cd/m
for evaluation is not applicable.) Use a testing standard lens with CM500S (t = 1.0mm) as an IR cut filter and
image at F5.6. The luminous intensity to the sensor receiving surface at this point is defined as the standard
sensitivity testing luminous intensity.
Image a light source (color temperature of 3200K) with a uniformity of brightness within 2% at all angles.
Use a testing standard lens with CM500S (t = 1.0mm) as an IR cut filter. The luminous intensity is adjusted
to the value indicated in each testing item by the lens diaphragm.
Set to standard imaging condition I. After selecting the electronic shutter mode with a shutter speed of
1/250s, measure the Y signal (Ys) at the center of the screen and substitute the value into the following
formula.
S = Ys ×
Set to standard imaging condition II. Adjust the luminous intensity so that the average value of the Y signal
output is 200mV, and then measure the Mg signal output (S
signal output (S
method. Substitute the values into the following formula.
R
R
Set to standard imaging condition II. After adjusting the luminous intensity to 10 times the intensity with
average value of the Y signal output, 200mV, measure the minimum value of the Y signal.
Set to standard imaging condition II. With the lens diaphragm at F5.6 to F8, adjust the luminous intensity to
500 times the intensity with average value of the Y signal output, 200mV. When the readout clock is
stopped and the charge drain is executed by the electronic shutter at the respective H blankings, measure
the maximum value YSm [mV] of the Y signal output and substitute the value into the following formula.
Set to standard imaging condition II. With the lens diaphragm at F5.6 to F8, adjust the luminous intensity so
that the average value of the Y signal output is 200mV. Then measure the maximum (Ymax [mV]) and
minimum (Ymin [mV]) values of the Y signal and substitute the values into the following formula.
SHy = (Ymax – Ymin)/200 × 100 [%]
Set to standard imaging condition II. Adjust the luminous intensity so that the average value of the Y signal
output is 200mV, and then measure the maximum (Crmax, Cbmax [mV]) and minimum (Crmin, Cbmin
[mV]) values of the R – Y and B – Y channels of the chroma signal and substitute the values into the
following formula.
ΔSr = | (Crmax – Crmin)/200 | × 100 [%]
ΔSb = | (Cbmax – Cbmin)/200 | × 100 [%]
MgG
YeCy
= S
= S
Mg
Ye
250
50
/S
/S
G
Cy
[mV]
YSm
Ye
200
[mV]) and Cy signal output (S
×
500
1
×
10
1
2
, color temperature of 3200K halogen source) as a subject. (Pattern
[dB] (1/10V method conversion value)
– 11 –
Cy
[mV]) at the center of the screen with frame readout
Mg
[mV]) and G signal output (S
G
[mV]), and Ye
ICX409AK