James (Saratoga Optics, Saratoga, California, USA) Stewart 
Optical Principles and Technology for Engineers [PDF ebook] 

Discussing the principles of physical and geometrical optics from an engineering point of view, this book explains current optical technology and the applications of optical methods in a wide variety of fields, from astronomy and agriculture to medicine and semiconductors. It offers guidance in the selection of optical components for the construction of bread-board models using commercially available, standard components, and provides immediately useful equations without unnecessary mathematical derivations.