ICX278 データシートの表示（PDF） - Sony Semiconductor

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ICX278

Diagonal 4.5mm (Type 1/4) CCD Image Sensor for NTSC Color Video Cameras

Sony Semiconductor 

ICX278AK

5. Video signal shading

Set to standard imaging condition III. 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 [%]

7. Dark signal

Measure the average value of the Y signal output (Ydt [mV]) with the device ambient temperature 60°C and

the device in the light-obstructed state, using the horizontal idle transfer level as a reference.

8. Dark signal shading

After measuring 7, measure the maximum (Ydmax [mV]) and minimum (Ydmin [mV]) values of the Y signal

output and substitute the values into the following formula.

∆Ydt = Ydmax – Ydmin [mV]

9. Flicker

1) Fy

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 difference in the signal level between fields (∆Yf [mV]). Then

substitute the value into the following formula.

Fy = (∆Yf/200) × 100 [%]

2) Fcr, Fcb

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

output is 200mV, insert an R or B filter, and then measure both the difference in the signal level between

fields of the chroma signal (∆Cr, ∆Cb) as well as the average value of the chroma signal output (CAr, CAb).

Substitute the values into the following formula.

Fci = (∆Ci/CAi) × 100 [%] (i = r, b)

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