Large-scale optical diffraction tomography for inspection of optical plastic lenses

Abstract

Herein is presented an optical diffraction tomography (ODT) technique for measuring 3-D refractive index (RI) maps of optical plastic lenses. A Mach-Zehnder interferometer was used to measure multiple complex optical fields of a plastic lens immersed in RI matching oil, at various rotational orientations. From this, ODT was used to reconstruct a 3-D RI distribution of the plastic lens with unprecedented RI sensitivity (dn = 4.21 x 10^-5) and high resolution (12.8 um). As a demonstration, 3-D RI distributions of a 2-mm-diameter borosilicate sphere and a 5-mm-diameter plastic lens

References in corpus (1)

• 3-D refractive index tomograms and deformability of individual human red blood cells from cord blood of newborn infants and maternal blood

Cited by in corpus (4)

• Time-multiplexed structured illumination using a DMD for optical diffraction tomography
• Reconstructions of refractive index tomograms via discrete algebraic reconstruction technique
• Quantitative phase and refractive index imaging of 3D objects via optical transfer function reshaping
• Optical measurements of three-dimensional microscopic temperature distributions around gold nanorods excited by surface plasmonics