ICX274AL Datasheet, PDF (17/71 Pages) Sony Corporation – Diagonal 8.923mm (Type 1/1.8) Progressive Scan CCD Image Sensor with Square Pixel for B/W Video Cameras

ICX274AL
Measurement conditions
(1) In the following measurements, the device drive conditions are at the typical values of the bias and clock
voltage conditions, and the progressive scan readout mode is used.
(2) In the following measurements, spot blemishes are excluded and, unless otherwise specified, the optical
black level (OB) is used as the reference for the signal output, which is taken as the value measured at
point [*B] of the measurement system.
Definition of standard imaging conditions
(1) Standard imaging condition I:
Use a pattern box (luminance: 706cd/m², color temperature of 3200K halogen source) as a subject.
(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 the standard imaging condition I. After selecting the electronic shutter mode with a shutter speed of
1/100s, measure the signal output (Vs) at the center of the screen, and substitute the values into the
following formulas.
S = Vs × ¹⁰⁰ [mV]
30
2. Saturation signal
Set to the standard imaging condition II. After adjusting the luminous intensity to 10 times the intensity with
the average value of the G chanel signal output, 150mV, measure the minimum values of the signal
outputs.
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 the average value of the signal output, 150mV. After the readout clock is
stopped and the charge drain is executed by the electronic shutter at the respective H blankings, measure
the maximum value (Vsm [mV]) of the signal outputs, and substitute the values into the following formula.
Smear in modes other than progressive scan mode is calculated from the storage time and signal
addition method. As a result, 2-line addition mode and center scan modes (2) and (3) are the same as
progressive scan mode, 2/4-line readout mode and center scan mode (1) are two times progressive scan
mode, and 2/8-line readout mode and AF modes (1) and (2) are four times progressive scan mode.
Sm = 20 × log
Vsm _× 1 _× 1
200 500 10
[dB] (1/10 V method conversion value)
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