Recently, two image sensor books have been published. "High Performance Silicon Imaging: Fundamentals and Applications of CMOS and CCD sensors" is edited by Daniel Durini with contribution from many universities and well known imaging companies:
"Essential Principles of Image Sensors" by Takao Kuroda talks about essentials, just like its cover says:
"Essential Principles of Image Sensors" by Takao Kuroda talks about essentials, just like its cover says: