Achromats are one of the most commonly used optical components in optical design and engineering. Historically, an achromat is composed of two lenses: a positive crown glass element and a negative flint glass element, cemented together. The compound lens brings at least two wavelengths of light to a common focus along the optical axis. Presented in this paper is the novel implementation of an achromatic singlet made of a single optical material, Zeonex E48R. A customized ray tracing algorithm was used to arrive at the solution while single point diamond turning is used to fabricate a series of prototypes. Axial MTF and chromatic focal shift data are presented alongside two similar comparison lenses: a plano-convex lens and a traditional cemented achromatic doublet. The test results illustrate achromatic performance can be achieved using a single optical material with axial performance that exceeds an incumbent cemented achromat with the same first order properties of focal length and lens diameter. Applications for the new singlet achromatic lens design form include broadband focusing, high laser power uses, and ultraviolet applications where optical cement is not desired. Keywords:
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