Apple co-founder Steve Jobs wore Lunor Classic Rund PP eyeglasses. In many iconic photos of Jobs we can see him wearing these rimless glasses. According to Lunor, Jobs started wearing these glasses 14 years ago (so in 1997, around the time he returned as CEO of Apple). Together with his grey New Balance 992 sneakers, blue Levi's 501 jeans and a black St. Croix or Issey Miyake turtleneck sweaters, the glasses became part of Jobs regular outfit.
Lunor is a German eyewear brand, known for it's quality and simple style, worn by several celebrities.
Thanks to OneMoreThing for the ID
Reference: Lunor Classic Rund PP