Replica Grating

replica grating

[′rep·lə·kə ‚grād·iŋ]
(optics)
A diffraction grating made by flowing a plastic solution over an original grating, evaporating the solvent, and removing the resulting film, which has the lines of the original grating impressed on it.

Replica Grating

 

in optics, a copy of a diffraction grating obtained by making an impression of the grating on a gelatin or special plastic film.