2 October 2008 A versatile wide dynamic range pixel with an improved low-light sensitivity
Author Affiliations +
A novel CMOS pixel will be described that combines the sensitivity and speed of response at low light levels of an integrating pixel with the wide dynamic range of a logarithmic response. However, as with all pixels, the low-light sensitivity of this novel pixel is ultimately limited by the dark current that flows through the pixel in parallel with the photocurrent. Since the dark current increases rapidly with temperature, this effect is particularly important for cameras that operate in hot environments. Results are reported that show that the dark current in these novel pixels and the temperature dependence of the dark current can both be reduced by careful pixel layout. Alternatively, the user generated function that controls the response of the pixel can be changed to accommodate the dark current and significantly increase the low-light sensitivity of the pixel.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hsiu-Yu Cheng, Hsiu-Yu Cheng, Steve Collins, Steve Collins, } "A versatile wide dynamic range pixel with an improved low-light sensitivity", Proc. SPIE 7113, Electro-Optical and Infrared Systems: Technology and Applications V, 71130F (2 October 2008); doi: 10.1117/12.799932; https://doi.org/10.1117/12.799932


High-speed camera based on a CMOS active pixel sensor
Proceedings of SPIE (February 28 2000)
A 14-megapixel 36 x 24-mm2 image sensor
Proceedings of SPIE (June 06 2004)
Linear position sensor
Proceedings of SPIE (February 06 2006)

Back to Top