Optimized light output for passive stereoscopic projection in VR-systems

This paper presents a simple and effective method to increase the light output in passive stereoscopic projection environments. We realized a processing chain with Liquid Crystal on Silicon (LCoS) projectors, taking advantage of the already polarized projector light. Minimizing light losses could be achieved with retarders instead of polarizers in the optical path in combination with changes in the electrical signal path. The efficiency could be greatly improved.