Smear

Smear

Interline Transfer Sensor

The sensor is divided into alternating vertical columns of light sensitive and light blocking areas. the light sensitive area is the image sensor where light is collected and transformed into charges. the light blocking area is the vertical shift register, where those charges are stored and shifted into the read out register. When the image sensor area recieves the requested duration of exposure, the charges are transfered to the vertical shift register directly beside the image sensor area. Once the charges enter the vertical shift register, the charges begin to shift vertically towards the read out register. The read out register reads the charges row by row until all the stored charges have been moved into the read out register and read.

Smear

Smear is an excess signal that becomes visible when an interline sensor is exposed to an intense light source during its readout period. Smear results from light leaking into the vertical shift registers as charges are being moved towards the readout register to be read out. As the charges move, light from intense sources can penetrate the vertical shift register, brightening the image above and below where the source should expose the image. This causes unattractive bands of brightness in the image.

Phone: 585-624-3760
Email: sales@flicamera.com
Web: https://flicamera.com

Finger Lakes Instrumentation
200 Tech Park Drive
Rochester NY 14623 USA