his greatest inner experience, a revelation of the Godhead upon which all his later writings are based, came from seeing a ray of light being reflected in a tin plate… his eye was hit by the ray of light, and that outer sensation experience snapped him into an inner ecstasy
Von Franz argues that Boehme’s illumination — catalysed by a ray of light on tin — exemplifies how inferior extraverted sensation in an introverted intuitive can trigger a total vision of the Godhead, linking optical phenomenon to psychospiritual transformation.
, Psychotherapy, 1993thesis