SPIE Gold Medal, or Gold Medal Award of SPIE, is the highest honor of SPIE (the international society for optics and photonics), and is considered as one of the highest award in the fields of photonic and optical engineering and related instrumental sciences. The Gold Medal started awarding annually since 1977, and the award includes a medal and 10,000$ cash award. The most recent awardee is Prof. Harrison H. Barrett. [1]