ICX285 データシートの表示（PDF） - Sony Semiconductor

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ICX285

CCD Image Sensor with Square Pixel for Color Cameras / 20Pin Ceramic Package

Sony Semiconductor 

ICX285AQ

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, and the progressive scan 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 of the Gr/Gb

signal output or the R/B signal output 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 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, sensitivity comparison

Set to the standard imaging condition I. After setting the electronic shutter mode with a shutter speed of 1/100s,

measure the signal outputs (VGR, VGb, VR and VB) at the center of each Gr, Gb, R and B channel screen,

and substitute the values into the following formulas.

VG = (VGr + VGb) /2

Sg = VG × 100

30

Rr = VR/VG

Rb = VB/VG

[mV]

2. Saturation signal

Set to the standard imaging condition II. After adjusting the luminous intensity to 20 times the intensity with

the average value of the Gr signal output, 200mV, measure the minimum values of the Gr, Gb, R and B

signal outputs.

3. Smear

Set to the standard imaging condition II. With the lens diaphragm at F5.6 to F8, first adjust the average

value of the Gr signal output to 200mV. Measure the average values of the Gr signal output, Gb signal

output, R signal output and B signal output (Gra, Gba, Ra, Ba), and then adjust the luminous intensity to

500 times the intensity with the average value of the Gr signal output, 200mV.

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]) independent of the Gr, Gb, R and B signal

outputs, and substitute the values into the following formula.

Sm = 20 × log (Vsm ÷ Gra + Gba + Ra + Ba × 1 × 1 ) [dB] (1/10V method conversion value)

4

500 10

– 13 –

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