Patent ID: 8895924
Filing Date: 2014-11-25
Classification: B82Y,G01J,G02B

Abstract:
1. A bolometric array detector for detecting electromagnetic radiation in a predetermined range of infrared or terahertz wavelengths comprising a substrate and an array of bolometric micro-plates for detecting said radiation, said micro-plates being suspended above the substrate by means of support arms, wherein said detector comprises a metallic layer having a portion forming a membrane placed on top and around each micro-plate and in which openings are formed; wherein the openings formed in the metallic membrane are periodically located in said membrane along at least one predetermined axis with a period equal to or less than  where λ is a wavelength in the wavelength range of the electromagnetic radiation to be detected and n is the average refraction index of a medium that separates micro-plate from the metallic membrane; and wherein the metallic layer extends downward all the way around said micro-plate.