The measurement of spherical surface radii exceeding a few meters presents a challenge, because the familiar radius-bench method requires large part displacements. Dual-focus zone plates can extend the radius-bench method to measurements of large radii.
Proceedings Title: Technical Digest of the 2008 Optical Society of America Optical Fabrication and Testing Meeting
Conference Dates: October 20-23, 2008
Conference Location: Rochester, NY
Conference Title: Optical Fabrication and Testing 2008
Pub Type: Conferences
optical testing, diffractive lenses