TC277

735-

× 580-PIXEL CCD IMAGE SENSOR

SOCS020B – DECEMBER 1991

8

POST OFFICE BOX 655303

spurious-nonuniformity specification

The spurious-nonuniformity specification of the TC277 CCD grades – 10, – 20, – 30, and – 40 is based on several

sensor characteristics.

–

Black

–

White

–

Area A

– Element columns near horizontal center of the area

– Element rows near vertical center of the area

–

Area B

– Up to the pixel or line border

– Up to area A

–

Other

– Edge of the imager

– Up to area B

The CCD sensors are characterized in both an illuminated condition and a dark condition. In the dark condition,

the nonuniformity is specified in terms of absolute amplitude as shown in Figure 6. In the illuminated condition,

the nonuniformity is specified as a percentage of the total illumination as shown in Figure 7.

B

A

17 Pixels

13 Lines

17 Pixels

9 Lines

Pixels

332

Lines

278

Figure 5. Sensor-Area Map