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Adj.1.planoconcave - flat on one side and concave on the other
concave - curving inward
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References in periodicals archive ?
Campillo, "Planoconcave lens by negative refraction of stacked subwavelength hole arrays," Optics Express, vol.
In order to improve the sensitivity, concave geometry [37] and a planoconcave microresonator [39] were designed to improve the optical confinement between reflecting surfaces (Figures 5(b) and 5(e)).
However, flat planoconcave contact lenses still have superior axial resolution and lateral resolution over wideangle systems for macular surgery [53].