Abstract

Freeform optical components are gaining wider acceptance in the optical industry. They offer a significant advantage in the design process, providing many additional variables to optimize the performance of an optical system. The cost to manufacture and adequately test these components has limited their implementation. Recent advances in computer generated holograms, that incorporate features to assure correct alignment, have resolved most testing concerns. Similarly, the latest generations of diamond turning machines and programming techniques now provide a cost effective manufacturing path for certain reflective and refractive components. This paper will discuss the mechanical design considerations for a typical reflective component, provide an overview of the various diamond machining techniques available, the use of post processing for improved figure and finish, testing issues and processes, coating considerations, and actual results derived with these.

© 2015 Optical Society of America