– 9 –

ICX408AL

Image Sensor Characteristics Measurement Method

Measurement conditions

1) In the following measurements, the device drive conditions are at the typical values of the bias and clock

voltage conditions.

2) In the following measurements, spot blemishes are excluded and, unless otherwise specified, the optical

black (OB) level is used as the reference for the signal output, and the value measured at point [∗A] in the

drive circuit example is used.

Definition of standard imaging conditions

1) Standard imaging condition I:

(Pattern for evaluation is not applicable.) Use a testing standard lens with CM500S (t = 1.0mm) as an IR cut

filter and image at F8. 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 signal output (Vs) at the center of the screen and substitute the value into the

following formula.

2. Saturation signal

Set to standard imaging condition II. After adjusting the luminous intensity to 10 times the intensity with the

average value of the signal output, 200mV, measure the minimum value of the signal output.

3. 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 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 signal output and substitute the value into the following formula.

S = Vs

×

[mV]

60

250

Sm = 20

× log

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

××

500

1

200

VSm

10

1