The transmitted wavefront of spherical lens measured by rotation-shift method

The precision of traditional interference testing technology is limited by the precision of reference wavefront. In the measurement of transmitted wavefront of spherical lens, the reference wavefront include the front sphere and the rear mirror. To overcome the limitation, a novel absolute method is proposed. The absolute wavefront of the tested lens was obtained by rotating once and shifting twice. The simulation was completed. In simulation, the order of magnitude of the residual was 10−13 and the error caused by rotation error was analyzed. The experimental result was given and compared with the result obtained by other method. The results of simulation and experiment demonstrate that rotation-shifting method can effectively reduce the influence of the front sphere and rear mirror.