Sony announced development of 5MP backside illuminated sensor with 1.75um pixels. It's claimed to have nearly twice higher sensitivity and lower noise. The new sensor achieves SNR of +8dB(+6dB sensitivity, -2dB noise) in comparison to existing Sony CMOS image sensors of the same pixel size.
The BSI sensor retains 60fps speed that it achieved in its latest sensor's generation.
Compared to conventional front-illuminated structures, back-illuminated structures commonly causes problems such as noise, dark current, defective pixels and color mixture that lead to image degradation and also cause a decrease in the SNR. To overcome this Sony developed a new photo-diode structure and on-chip lens optimized for back-illuminated structures. Additionally, Sony's high-precision alignment have addressed color mixture problems.
No comments:
Post a Comment
All comments are moderated to avoid spam and personal attacks.