Design and manufacturing of a high-quality railroad crossing roundel lens

Jack Fu; Alex Ning

doi:10.1117/12.216806

18 August 1995 Design and manufacturing of a high-quality railroad crossing roundel lens

Jack Fu, Alex Ning

Proceedings Volume 2622, Optical Engineering Midwest '95; (1995) https://doi.org/10.1117/12.216806
Event: Optical Engineering Midwest '95, 1995, Chicago, IL, United States

Abstract

A new and improved railroad crossing roundel lens with 12 inch diameter, 0.21 inch thickness using polycarbonate was designed and manufactured. This design meets or exceeds all the recommendations by the Association of American Railroads. The combination of the new design, precision tooling fabrication, and computer-controlled processing technology has allowed this new design to out-perform the existing products on the market.

Citation Download Citation

Jack Fu and Alex Ning "Design and manufacturing of a high-quality railroad crossing roundel lens", Proc. SPIE 2622, Optical Engineering Midwest '95, (18 August 1995); https://doi.org/10.1117/12.216806

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