Introduction

摘要

Welcome to our annual event in beautiful San Diego. While our conference has been going on for more than two decades, we should not take it for granted. Its continuity depends on the creativity of its participants (many of whom are in this room) and the vitality of the subject of nonimaging optics. On this point, you will see that the program has many innovative presentations. There is a nexus of nonimaging optics and energy that is very much "in the air". For example, concentrating photovoltaics at the nanoscale takes advantage of the efficiency of nonimaging optics at the diffraction limit.