16 December 1976 Machining Nonconventional-Shaped Optics
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Nonconventional-shaped optics are being machined for use in laser optical systems. The fabrication processes incorporate special-quality diamond tools and specially constructed turning machines. The shapes produced include axicons (conical-shaped mirrors), waxicons (a compound axicon with a "W" cross section), torics, and multifacet mirrors. Whereas conventional-shaped optics are readily producible by the lapping process, these nonconventional-shaped optics are very impractical to lap. The axicons and waxicons produced were estimated to have surface straightness as good as 5 μin (125 nm), over 3 inches (76 mm) of length, and angular accuracy as good as 2 arc seconds. A toric mirror was estimated to deviate (peak to valley) from a best-fit radius by 4 μin (100 nm) over 2.25 inches (57 mm) of surface length.
© (1976) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. B. Arnold, T. Saito, R. E. Sladky, P. J. Steger, N. D. Woodall, "Machining Nonconventional-Shaped Optics", Proc. SPIE 0093, Advances in Precision Machining of Optics, (16 December 1976); doi: 10.1117/12.955106; https://doi.org/10.1117/12.955106

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