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ICX404AK

Definition of standard imaging conditions

1) Standard imaging condition I:

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.

2) Standard imaging condition II:

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.

1. Sensitivity

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

×

[mV]

2. Sensitivity ratio

Set to standard imaging condition II. Adjust the luminous intensity so that the average value of the Y signal

method. Substitute the values into the following formula.

3. Saturation signal

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.

4. Smear

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.

5. Video signal shading

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 [%]

6. Uniformity between video signal channels

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.

∆Sr = | (Crmax – Crmin)/200 | × 100 [%]

∆Sb = | (Cbmax – Cbmin)/200 | × 100 [%]

Sm = 20

× log

[dB] (1/10V method conversion value)

××

500

1

60

250

200

YSm

10

1