A method based on the Herzberger approach has been in- vestigated for the selection of glasses for the apochromatic correction at near-infrared (NIR) wavelength. The method avoids the algebraic com- plexity and simplifies the glass selection processes. Doublet and triplet glass combinations can be chosen directly from the plot of partial disper- sion versus V number. Good combinations of NIR doublets and triplets are given. Design examples show that the method is practical and effi- cient.
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Deqing Ren (1999) studied this question.
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