Abstract: The invention relates to an electron bombarded image sensor array device comprising a vacuum chamber having a photocathode capable of releasing electrons into said vacuum chamber when exposed to electromagnetic radiation impinging on said photocathode, electric field means for accelerating said released electrons from said photocathode towards an anode spaced apart from said photocathode in a facing relationship to receive an electron image from said photocathode, said anode being constructed as an back thinned image sensor array having electric connecting pads and being mounted to a carrier using mounting means, said carrier having electric connecting pads to feed electric signals from said image sensor array finally outside said vacuum chamber. The invention also relates to an image sensor array to be used in such a device.