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Definition of "geodesic lens" |
a lens composed of circularity symmetric spherical depression (or dimples) in the surface of a thin-film waveguide. In this type of lens, lightwaves are confined in the waveguide and follow the longer curved path through the lens region. Waves propagating near the center of the lens travel a longer path than waves near the edge, modifying the wave front so that focusing can occur. |
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