5 Mpx CMOS backside illuminated high speed image sensor for surveillance
The 2.2 µm Back Side Illuminated pixel technology enables clear, sharp digital pictures while the sensor’s ability to capture both continuous video and single frames suits it for security applications. A demo kit is available.
The AR0521 captures images in either linear or high dynamic range modes with rolling shutter readouts and includes additional functions such as binning and subwindowing in both video and single frame modes. It is designed for both low light and high dynamic range performance, with line interleaved T1/T2 readout that support off chip HDR algorithms in an ISP chip.
Framos adds, “The AR0521 is a fast surveillance sensor with high sensitivity and an excellent image quality for precise recognition and analysis. In comparison to its predecessor, the MT9P006 sensor, it provides an 18% increase in Quantum Efficiency (QE) at 550 nm along with 33% in the NIR [near-infra-red] region, which is important for most of our surveillance customers. The AR0521 makes surveillance more secure by providing better images under challenging conditions while its small form factor eases the integration in OEM and embedded vision projects.”
Image quality is supplemented by several digital processing functions, including digital gain, dynamic defect correction and a digital shading correction block that compensates for colour/brightness shading that is introduced by the lens and the sensor’s chief ray angle (CRA) curve mismatch. The full resolution image can be outputted at 60 frames per second (fps) in linear mode and 30 fps in line interleaved high dynamic range (HDR) mode output through either the MIPI or HiSPi ports. The maximum data rate for MIPI is 1.2 Gb/second and 1.0 Gb/second for HiSPi. The AR0521 is designed to operate over an ambient temperature range of -30°C to +85°C which aligns with a wide range of applications in rough environments. It also supports advanced line synchronization controls for multi-camera (stereo) support.
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