Patent ID: 9482581
Filing Date: 2016-11-01
CPC Classification: G01J,H05K,Y10T

Claim Text:
1. A bolometric detector comprising: a substrate; bolometric detection microbridges suspended above the substrate and thermally insulated from the substrate; bolometric compensation microbridges suspended above the substrate and thermalized to the substrate; and a read circuit formed in the substrate to apply a biasing to the detection microbridges and to the compensation microbridges and to form differences between signals generated by detection microbridges and signals generated by compensation microbridges under the effect of the applied biasing, each detection microbridge and each compensation microbridge comprising electrically-conductive anchoring nails connected to the read circuit, a membrane attached to the anchoring nails above the substrate, and a thermometric element arranged in the membrane; the bolometric detector further comprising thermal short-circuit elements between the membrane of each compensation microbridge and the substrate, wherein the thermal short-circuit elements under each compensation microbridge comprise metal patterns arranged under the bolometric element of the compensation microbridge and in contact with the membrane of the compensation microbridge and of the substrate and wherein the short-circuit elements are electrically insulated from the thermometric element by a dielectric layer.