Patent ID: 8446666

Claim:
A multilayer structure comprising: a plurality of alternating layers of a low index of refraction material and a high index of refraction material; said plurality of alternating layers of said low index of refraction material and said high index of refraction material reflecting electromagnetic radiation in the ultraviolet region and a narrow band of electromagnetic radiation in the visible region; said plurality of alternating layers of said low index of refraction material and said high index of refraction material having a layered structure described by [A 0.5 qH pL (qH pL) N 0.5 qH G], where: A represents air; q is a multiplier of a quarter-wave thickness of said high index of refraction material; H is the quarter wave thickness of the high refracting index material for a given wavelength λ 0 ; p is a multiplier of a quarter-wave thickness of said low index of refraction material; L is the quarter-wave thickness of the low refracting index material for said given wavelength λ 0 ; N represents the total number of layers between bounding half layers of said high index of refraction material; and G represents a substrate.