DEVICE FOR MEASURING LENS ABERRATION AND METHOD FOR MEASURING ABERRATION USING THE MEASURING DEVICE

摘要

PURPOSE: A device for measuring a lens aberration is provided to enable to use a complete spherical surface wave as a standard optical source and to measure the aberration down to the third decimal place of a wavelength. CONSTITUTION: A device for measuring a lens aberration comprises: a testing lens(40); a first diffractive optics device(42a) installed in front of the testing lens; a condenser lens(42b) installed in front of the first diffractive optics device; an aperture(42c) installed in front of the condenser lens for limiting the incident optical amount to the condenser lens; a second diffractive optics device(44a) installed behind the testing lens; and an optical measuring instrument(44b) installed behind the second diffractive optics device.