This invention deals with the reduction in fixed pattern noise in backthinned CMOS imagers primarily for use in a vacuum environment. Reduction is achieved by effectively shielding the imager. This is done by depositing a conductive layer on the front surface prior to the attachment of a support member...http://www.google.de/patents/US20040149888?utm_source=gb-gplus-sharePatent US20040149888 - Backthinned CMOS sensor with low fixed pattern noise