NASA NTRS · 19830044899
Rectangular Luneburg-type lenses for integrated optics
Abstract
Compact Luneburg-type lenses of rectangular outline as viewed from above have been made by thermal evaporation of As2S3 glass onto single-mode LiNbO3:Ti waveguides through suitably shaped masks and subsequent exposure of the glass to ultraviolet light. The best lenses had speeds of f/5.5 at an aperture of 10 mm and focal spots at reduced aperture about 1.2 times the diffraction-limited size. These lenses have a field of view of at least 25 degrees inside the waveguide.
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Wood, V. E., Busch, J. R., Moore, D. T., Wooley, C. B., Southwell, W. H.. 1983-04-01. Rectangular Luneburg-type lenses for integrated optics. https://ntrs.nasa.gov/citations/19830044899
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