REFRACTIVE INDEX DISTRIBUTION MEASUREMENT METHOD, REFRACTIVE INDEX DISTRIBUTION MEASUREMENT DEVICE, AND OPTICAL ELEMENT MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To measure the refractive index of a lens to be inspected with high accuracy in a nondestructive way.SOLUTION: A lens 60 to be inspected is installed on a reference base 50 having the shape of a form at edges of the lens 60 to be inspected, and the transmission wavefront in a plurality of wavelengths at edges of the lens 60 to be inspected is measured. The refractive index at edges of the lens 60 be inspected is specified on the basis of the transmission wavefront in the plurality of wavelengths at edges of the lens 60 to be inspected and the refractive index of the reference base 50.SELECTED DRAWING: Figure 1