Systems and methods are described for reducing thermal distortion in an optical display for use in a 3D stereoscopic video conferencing system. The thermal distortion can arise from operation of an array of LEDs in a back light unit of the display. Elements with compliance are included in a load path between a structure used for precision camera array mounting and its fixture points to reduce sensitivity to thermal cycles. The compliant elements, or flexures, can allow for linear expansion and prevent buckling of the backplate during thermal cycling, thus reducing motion of the cameras.