Electromagnetic radiation detecting device comprising an active bolometer and a shielded reference bolometer

US8772718B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Jean-Louis Ouvrier-Buffet · Sevrier, FR
• Jerome Meilhan · Grenoble, FR

Key dates

• Filing date: Oct 11, 2011
• Grant date: Jul 8, 2014
• Expiry date: May 17, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G01J2005/065
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for detecting electromagnetic radiation that comprises an active bolometer provided with a first element sensitive to said electromagnetic radiation and a reference bolometer identical to the active bolometer, provided with a second element sensitive to said electromagnetic radiation. The active bolometer and reference bolometer are arranged close to one another on the same substrate. A cover covers at least the part of the second sensitive element exposed to the electromagnetic radiation and arranges an empty space between said second sensitive element and the cover. The inner wall of the cover is constituted by an absorbent layer made from a material absorbing at least the thermal radiations emitted by the second sensitive element. A reflecting shield forms at least a part of the outer wall exposed to said electromagnetic radiation.