Abstract

This paper presents a new method for determining a pair of cost-effective optical materials and powers to achromatize and athermalize a lens system, by introducing the material selection index including price level (MSIP). To obtain a relatively low-cost material effectively, we propose, to the best of our knowledge, a novel glass map including the price levels of the glasses. The materials with a small MSIP were selected on the glass map to correct chromatic aberration and thermal defocus easily, along with providing a cost-effective design. Although there are many material combinations, we can rationally identify the best selection of glasses by checking the MSIP index. Finally, the matching of the aberration-corrected point to an available material by redistributing the optical powers yields a good achromatic and athermal design. Using this aberration-corrected point-matching method, we efficiently obtained an achromatic and athermal system with cost-effective material selection, over the specified temperature and waveband ranges.

© 2021 Optical Society of America

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