TY - CONF AU - Carl Miller AU - Yuqin Zong AU - Yoshihiro Ohno C2 - Proceedings of the SPIE 49th Annual Meeting DA - 2004-10-20 DO - https://doi.org/10.1117/12.566635 LA - en M1 - SPIE Vol. 5530 PB - Proceedings of the SPIE 49th Annual Meeting PY - 2004 TI - LED Photometric Calibrations at the National Institute of Standards and Technology and Future Measurement Needs of LEDs ER -