In memoriam: Joe Yaver, SPIE leader; optics visionary . 05?Dec?2016 Society’s long-serving former executive director and driving force behind what became the Photonics West event dies at 83. Joe Yaver: SPIE executive director from 1969 until 1993 Joe Yaver, the long-serving executive director of optics.org publisher SPIE , has died at the age of 83. Described by the international optics and photonics society as a leader and visionary force, Yaver led the organiza...