TY - JOUR AU - D Chenault AU - K Snail AU - Leonard Hanssen C2 - Applied Optics DA - 1995-01-01 00:01:00 LA - en M1 - 34 PB - Applied Optics PY - 1995 TI - Improved Integrating Sphere Throughput with a Lens and Nonimaging Concentrator ER -