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High dynamic range CMOS camera for automotive applications

: Brockherde, W.; Nitta, C.; Hosticka, B.J.; Krisch, I.; Bußmann, A.; Wertheimer, R.


Valldorf, J.:
Advanced Microsystems for Automotive Applications 2005 : Papers of the AMAA 2005, the Annual International Forum on Advanced Microsystems for Automotive Applications, held in Berlin, 17-18.03.2005
Berlin: Springer, 2005 (VDI-Buch)
ISBN: 3-540-24410-7
International Forum on Advanced Microsystems for Automotive Applications (AMAA) <9, 2005, Berlin>
Fraunhofer IMS ()
high dynamic range camera; image sensor; automotive camera; CMOS camera; CMOS-Kamera; Bildverarbeitung; Fahrzeug

We have developed a CMOS camera featuring high sensitivity and high dynamic range which makes it highly suitable for automotive applications. The camera exhibits a 768x76 pixel resolution and a dynamic range of 118dB at 50fps. The measured noise equivalent exposure is 66pJ/cm2 at a wavelength of 635nm which corresponds to 4.9mlx at an integration time of 20ms. The centrepiece of the camera is a novel CMOS image sensor chip integrated in a standard 0.5µm CMOS technology. The image sensor employs multi-exposure principle and was used to build an automotive camera, which contains the CMOS image sensor, camera electronics, a2/3 inch lens and an IEEE 1394 Firewire Interface. This interface enables transfer of user-defined sub-frames yielding 512x256 pixels which exhibit 118dB dynamic range at 50fps and featuring 64dB dynamic range when acquired at a single integration time.