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Considerable interest has been manifested for the use of high-brilliance X-ray synchrotron sources and X-ray Free-Electron Lasers for the investigation of samples.
Free-Electron Lasers and Synchrotrons are rapidly increasing in brilliance. This has led a requirement of large dynamic range and high frame rate sensors that is now being fulfilled by the PERCVIAL CMOS imager for direct X-ray detection developed at Rutherford Appleton Laboratory. Utilising a lateral overflow pixel and back-side illumination, PERCIVAL simultaneously achieves low-noise single-photon...
Digital cameras are increasingly used in emerging applications such as automotive safety. Automotive scenes require the use of WDR image sensors for active safety systems with the goal of avoiding collisions by detecting obstacles. In this paper a one dimensional array of pixels from a 0.35-μm CMOS technology is described that integrates the photocurrent in each pixel for time that depends upon the...
The digital imager sensors integrated into most current systems have a linear response and a dynamic range of 60 dB or less. This is not a large enough dynamic range for some applications. Although suitable for most applications there are some emerging applications, such as automotive safety, that require a dynamic range of 120 dB. In this paper a pixel circuit for a 0.35-??m CMOS technology is described...
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