ABERRATION-CORRECTING OPTICAL UNIT AND LASER MICROSCOPE

摘要

An aberration correction optical unit (3) disposed in an optical system includes: a first phase modulation element (3a) and a second phase modulation element (3c) each having a polarization characteristic; and a variable waveplate (3b) disposed between the first and second phase modulation elements so that an optical axis of the variable waveplate has a predetermined angle with respect to optical axes of the two phase modulation elements, in order to correct an aberration generated by the optical system.