Patent ID: 8665419

Claim:
A device, comprising: an optical element comprising three connecting pins, each connecting pin substantially projecting in a radial direction and having a surface; and a holding structure supporting the optical element, the holding structure comprising six bearing pins which define three bearing pin pairs, each bearing pin pair comprising a first bearing pin with a longitudinal axis and a second bearing pin with a longitudinal axis which is non-parallel to the longitudinal axis of the first bearing pin, each bearing pin having a surface that extends along its longitudinal axis, each bearing pin being removably disposed within the holding structure, wherein: each connecting pin has a corresponding bearing pin pair; the surface of each connecting pin contacts the surface of each of the bearing pins in its corresponding bearing pin pair; and for a given connecting pin, a contact point between the surface of the connecting pin and the surface of the first bearing pin in its corresponding bearing pin pair is different from a contact point between the surface of the connecting pin and the surface of the second bearing pin in its corresponding bearing pin pair.