Selection of Optical Glasses Using a Chromatic-Aberration Correction Method for the Whole Visible Range Plus a Telecentric Lens Design Applying the Method

Abstract

This paper shows the best selection and combination of glass in lens design, to correct a chromatic aberration using achromatic and apochromatic conditions. Using this research result, we have designed a telecentric lens for machine vision in the full range of visible light. We obtain good optical quality in the form of a quite small RMS wavefront error of 0.057 λ in the super-broadband wavelength range 380 nm -780 nm. This result is better than that for a common telecentric lens in the visible wavelength range 486.1-656.2 nm.