NASA NTRS · 20030068890
Panoramic Refracting Conical Optic
Abstract
An optical device having a semi-spherical or hemispherical field-of-view is provided. A conically-shaped piece of optical material has an annular surface satisfying Snell's Law for total internal reflection with respect to light passing through the piece and incident on the annular surface from within the piece.
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Lindner, Jeffrey L.. 2003-06-17. Panoramic Refracting Conical Optic. https://ntrs.nasa.gov/citations/20030068890
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