
Publica
Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten. Photometric limits for digital camera systems
| Journal of electronic imaging 21 (2012), No.2, Art. 020501, 4 pp. ISSN: 1017-9909 |
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| English |
| Journal Article |
| Fraunhofer IOF () |
Abstract
Image sensors for digital cameras are built with ever decreasing pixel sizes. The size of the pixels seems to be limited by technology only. However, there is also a hard theoretical limit for classical video camera systems: During a certain exposure time only a certain number of photons will reach the sensor. The resulting shot noise thus limits the signal-to-noise ratio. In this letter we show that current sensors are already surprisingly close to this limit.