Popis: |
Wavefront sensors, particularly those of the Hartmann-Shack type are now available in commercial form from several manufacturers. They have found increasing use in medical and industrial applications and, for consistent measurements over a range of instruments and measurement situations, traceability of measurement is essential. We have investigated the use of simple artefacts such as an optical plate and a plano-convex lens, used with a point source, to generate prescribed values of optical aberration. Measured values obtained with Hartmann-Shack sensors are verified by comparison with calculated results and measurement by other means. |