GLASS SELECTION FOR INFRARED LENS DESIGN

摘要

The invention relates to process for manufacturing infrared optical lenses that will transmit in multiple infrared bands, for example, lenses with multiple optical elements such as doublet and triplet lenses (i.e., achromatic, apochromatic, and superachromatic optical elements). The lens materials are selected on the basis of dispersion ratios and/or minimum dispersions and minimum dispersion wavelengths as defined herein.

主权项

1. A method of manufacturing an infrared optical lens comprising a plurality of infrared optical elements, said method comprising:
selecting glasses for at least two of said infrared optical elements such that the glasses have similar minimum dispersion wavelengths but differing values of minimum dispersion; and joining said at least two of said infrared optical elements together.