Split optic support structure and optical system using split optic support structure

An optical system includes an optic support structure having a hollow interior with a longitudinal central axis and an optic support surface extending around the longitudinal central axis. Seats for axial and/or vertical alignment of an optic are defined on the optic support surface. The axial alignment seats can contact an outer circumferential edge of the optic, and the transverse alignment seats can contact one face of the optic. A resilient member extending transverse to the longitudinal central axis can be configured to contact the outer circumferential edge of the optic. The resilient member can apply a biasing force against the optic in a direction generally transverse to the longitudinal central axis that can force the optic against the seats of the optic support surface.