TY - CONF AU - Quandou Wang AU - Guangjun Gao AU - Ulf Griesmann C2 - Technical Digest of the 2008 Optical Society of America Optical Fabrication and Testing Meeting, Rochester, NY DA - 2008-10-20 LA - en PB - Technical Digest of the 2008 Optical Society of America Optical Fabrication and Testing Meeting, Rochester, NY PY - 2008 TI - Radius Measurement of Spherical Surfaces With Large Radii-of-Curvature Using Dual-Focus Zone Plates UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=824680 ER -