A null-lens based on Computer Generated Hologram is designed to test the primary mirror of GAIA telescope. The null-test has multiple-zones to achieve simultaneous self-alignment and wavefront-verification. The RMS-wavefront error is estimated to 7.33 nm.
© 2006 Optical Society of America
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.1000) Optical design and fabrication : Aberration compensation
(220.4840) Optical design and fabrication : Testing
M. Wang, D. Asselin, P. Topart, J. Gauvin, P. Berlioz, and B. Harnisch, "CGH Null-Test Design and Fabrication for Off-Axis Aspherical Mirror Tests," in International Optical Design, Technical Digest (CD) (Optical Society of America, 2006), paper ThA3.
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