ZEMAX Users' Knowledge Base

Ronian Siew

Ronian is a staff optical engineer at the Singapore division of Life Technologies (Applied Biosystems & Invitrogen). He has 11+ years of optical engineering experience. He holds a degree in physics and a Master's degree in optics, both from the University of Rochester. Prior to his current position, Ronian worked at the Qioptiq Group (Singapore) as an optical designer, and at Agfa Corp. where he was involved with the development of the world's first prepress scanning system that utilize the Grating Light Valve spatial light modulator.

 Articles by this Author

What is an "Effective F-Number"?

This article explains:
  • The meaning of F-Number for optical systems with non-circular stops
  • The theoretical basis for the defined effective F-Number in Zemax