摘要:
An infrared detector includes a sensitive part having a sensitive element and conducting elements. The sensitive element includes a layer of material in which the resistivity varies with the temperature. The conducting elements perform the functions of electrodes for the detector and infrared absorber. At least one support element for the sensitive part is capable of positioning the sensitive part, electrically connecting the sensitive part to a readout circuit, and thermally insulating the sensitive part from the rest of the structure. All conducting elements are places on the same surface of the layer of temperature sensitive material. The detector is manufactured according to a forming and etching process.
摘要:
The absorbent membrane of the detector is fixed in suspension by at least one thermally insulating support part onto a front face of a substrate comprising at least two electric connection terminals electrically connected to the membrane, for example by means of conducting layers. The support part has at least one base end and a raised zone. The base end is fixed to a top part of a conducting pillar having a base fixedly secured to one of the electric connection terminals. A substantially flat zone of a bottom face of the membrane is directly in contact with the raised zone of the support part. The support part is preferably formed by a bridge having a second base end fixed to a top part of a second pillar, the raised zone being formed by a flat middle part of the bridge.
摘要:
An absorbent membrane (1) is fixed in suspension onto a front face of a substrate (2), in a direction substantially parallel to the substrate (2), by at least one alveolate structure thermally insulating the membrane from the substrate (2) and arranged in a plane substantially perpendicular to the substrate (2). The detector can comprise arms (3) fixedly secured to the absorbent membrane (1). The alveolate structures can be respectively arranged between one of the arms (3) and the substrate (2). The alveolate structure can be formed by a plurality of superposed thin layers (6) separated by spacers (7) or by superposed rows of arcades formed by thin layers. The alveolate structure can comprise a porous pad.
摘要:
An absorbent membrane (1) is fixed in suspension onto a front face of a substrate (2), in a direction substantially parallel to the substrate (2), by at least one alveolate structure thermally insulating the membrane from the substrate (2) and arranged in a plane substantially perpendicular to the substrate (2). The detector can comprise arms (3) fixedly secured to the absorbent membrane (1). The alveolate structures can be respectively arranged between one of the arms (3) and the substrate (2). The alveolate structure can be formed by a plurality of superposed thin layers (6) separated by spacers (7) or by superposed rows of arcades formed by thin layers. The alveolate structure can comprise a porous pad.
摘要:
The absorbent membrane of the detector is fixed in suspension by at least one thermally insulating support part onto a front face of a substrate comprising at least two electric connection terminals electrically connected to the membrane, for example by means of conducting layers. The support part has at least one base end and a raised zone. The base end is fixed to a top part of a conducting pillar having a base fixedly secured to one of the electric connection terminals. A substantially flat zone of a bottom face of the membrane is directly in contact with the raised zone of the support part. The support part is preferably formed by a bridge having a second base end fixed to a top part of a second pillar, the raised zone being formed by a flat middle part of the bridge.
摘要:
Bolometric detector with intermediate electrical insulation and manufacturing process for this detector. According to the invention, at least two electrodes are formed facing the same face of a layer of bolometric material (5) and starting from the same layer of conducting material (8). Areas (8A, 8B) belonging to the two electrodes are electrically isolated from each other and electrically isolated from the layer of bolometric material, while other areas (7A, 7B) belonging to the two electrodes are separated from each other and are in electrical contact with this layer. The invention is particularly applicable to infrared imagery.
摘要:
According to one aspect, the invention relates to a microbolometer array for thermal detection of light radiation in a given spectral band, comprising a supporting substrate and an array of microbolometers (300) of given dimensions, arranged in an array. Each of said microbolometers comprises a membrane (301) suspended above said supporting substrate, said membrane consisting of an element (305) for absorbing the incident radiation and a thermometric element (304) in thermal contact with the absorber, electrically insulated from said absorber element. The absorber element comprises at least one first metal/insulator/metal (MIM) structure comprising a multilayer of three superposed films of submicron-order thickness i.e. a first metallic film (311), a dielectric film (310), and a second metallic film (309), said MIM structure being able to have a resonant absorption of said incident radiation at at least one wavelength in said spectral band. The area of the microbolometer pixel covered by said membrane (301) is less than or equal to half of the total area of the microbolometer pixel.
摘要:
This detector has a resistive element (4) able to undergo heating which is provided with electrical biasing means (6, 8) for amplifying or increasing the heating, a thermometer (12) thermally coupled to the element and converting a temperature variation undergone by the thermometer into an electric signal, and a device (18) for reading the electric signal. The invented detector can be applied to measure and detect infrared radiation. The detector can also be applied to measure and detect radiation of different wavelengths.
摘要:
The electromagnetic radiation detection device includes, on a same substrate: at least one active detector of the electromagnetic radiation provided with a first element sensitive to said radiation, at least one reference detector including a second element sensitive to said electromagnetic radiation, and a lid provided with first reflective means reflecting the incident electromagnetic radiation, said lid covering without contact the second sensitive element and defining with the substrate a cavity having the reference detector housed therein. The lid is designed to improve the sensitivity of the detection device.
摘要:
The electromagnetic radiation detection device includes, on a same substrate: at least one active detector of the electromagnetic radiation provided with a first element sensitive to said radiation, at least one reference detector including a second element sensitive to said electromagnetic radiation, and a lid provided with first reflective means reflecting the incident electromagnetic radiation, said lid covering without contact the second sensitive element and defining with the substrate a cavity having the reference detector housed therein. The lid is designed to improve the sensitivity of the detection device.