Fresnel rhombs bụ ezigbo achromatic retarders nwere mmetụta dị ala na ogologo ogologo ogologo ogologo karịa Waveplate, ọ na-agbanwe retardance na ogologo wavelength na-ebilite naanị site na mgbanwe na ngbanwe refractive. karịa ka enwere ike iji efere ebili mmiri birefringent, fresnel rhombs bụ ezigbo efere nkwụghachi azụ maka brọdband, ọtụtụ ahịrị ma ọ bụ isi iyi laser.
DIEN TECH na-enye ọkara ebili mmiri retarders nke a na-eme site na ijikọta rhomb abụọ nkeji iri na ise.