A novel nondestructive determination of refractive indices and thicknesses of transparent lenses
A novel nondestructive method of measuring the refractive indices and thicknesses of transparent lenses has been developed. Experimental measurements and numerical computations have been complementarily adopted in the paper. Experimentally, five selected lens samples will be used to quantitatively measure the radii of curvature and the best focusing positions on the both surfaces of the lenses. Subsequently, the refractive indices and thicknesses of the lens samples will be obtained through a derived numerical methodology. Such a measurement method of the refractive index and thickness of a lens has not been reported in the past. The results of the measured refractive index and thickness will be identified and compared with the nominal results. The uncertainties for both the refractive index and thickness of the lens will be deduced as well.