Optics, photonics:
An Overview of Photon Detectors (with Applications for Gamma rays to the Ultraviolet )
LIGHT MEASUREMENT HANDBOOK_ (Free)
Reference Library - Fiber Optics
Vision chips
PixelCam, Inc. - CMOS vs CCD White Paper
Photosensors for Fiber-Optic Readout
Optics and photonics online resource centre - optics.org
Optical Through the Air Communications Handbook
Photometric Units and CCD’s