| Ulis Patent applications |
| Patent application number | Title | Published |
|---|
| 20120037805 | SYSTEM AND METHOD FOR DETECTING INFRARED RADIATION - A device for detecting infrared radiation comprising an array of bolometers for detecting radiation; and in order to read each bolometer, a signal shaping circuitry comprising: a circuitry capable of biasing the bolometer at a predetermined voltage in order to make current flow therethrough; a circuitry capable of generating a common-mode current; and a circuitry capable of integrating the difference between the current that flows through the bolometer and the common-mode current. According to the invention, the device comprises a circuitry capable of injecting current into each bolometer in order to shift its resistance by a predetermined quantity that depends on its offset, current injection being performed prior to readout biasing of the bolometer and the shift being performed according to the direction in which the bolometer's resistance varies as a function of temperature. In addition, correction circuitry is capable of shifting the resistances of bolometers towards a common value. | 02-16-2012 |
| 20110290986 | DEVICE FOR DETECTION OF ELECTROMAGNETIC RADIATION WITH LOW SENSITIVITY TO SPATIAL NOISE - An electromagnetic radiation detection device including multiple elementary detectors ( | 12-01-2011 |
| 20110240833 | PARALLEL ANALOG-TO-DIGITAL CONVERSION METHOD, DEVICE IMPLEMENTING SAID METHOD AND IMAGING DETECTOR COMPRISING SAID DEVICE - An ADC includes:
| 10-06-2011 |
| 20110186737 | METHOD AND DEVICE FOR CONTROLLING THE RESISTANCE OF THE SENSITIVE MEMBER OF A BOLOMETRIC SENSOR - The invention relates to a method for controlling the resistance of a bolometer in a bolometer matrix of a sensor, said sensor comprising a circuit for reading said matrix which is capable of addressing said bolometer. | 08-04-2011 |
| 20110141286 | ELECTROMAGNETIC RADIATION DETECTOR WITH MICRO-ENCAPSULATION, AND DEVICE FOR DETECTING ELECTROMAGNETIC RADIATION USING SUCH DETECTORS - This electromagnetic radiation detector consists of a plurality of elementary detection micro-sites, each including a micro-detector provided with a membrane ( | 06-16-2011 |
| 20110068272 | DEVICE AND METHOD FOR DETECTING INFRARED RADIATION THROUGH A RESISTIVE BOLOMETER MATRIX - An infrared radiation detection device comprising: a substrate; a matrix of at least one line of elements for detecting said radiation, each comprising a resistive imaging bolometer, said matrix being formed above the substrate; means for reading the bolometers of the matrix, means for measuring the temperature in at least one point of the substrate; and means for correcting the signal formed from each bolometer as a function of the temperature measured in at least one point of the substrate. The correcting means are capable of correcting the signal formed from the imaging bolometer by means of a predetermined physical model of the temperature behaviour of said signal. | 03-24-2011 |
| 20100181485 | DEVICE FOR THE DETECTION OF AN ELECTROMAGNETIC RADIATION AND ELECTROMAGNETIC RADIATION DETECTOR COMPRISING SUCH DEVICES - The invention relates to a device for the detection of an electromagnetic radiation including: a substrate; a resistive imaging bolometer; a circuit for polarizing the bolometer at a predetermined voltage; a rejection circuit generating a common mode current, comprising a compensation bolometer thermalized in the substrate and a polarization circuit thereof; and a measuring circuit for measuring the difference between the current flowing in the imaging bolometer when it is polarized and the common mode current generated by the rejection circuit. According to the invention, the rejection circuit further comprises a current generator capable of producing a current that simulates the current induced by the self-heating of the imaging bolometer under the effect of its polarization, the sum of the current passing through the compensation bolometer and the current generated by the current generator forming the common mode current. | 07-22-2010 |
| 20100176298 | DEVICE FOR DETECTING ELECTROMAGNETIC RADIATION - The invention relates to a device for detecting electromagnetic radiation comprising: a resistive bolometer, a biasing circuit capable of biasing said bolometer with a predetermined bias voltage, a rejection module capable of generating a common mode current, a measuring circuit capable of being connected to a bolometer and a rejection module in order to measure the difference between the current flowing through the bolometer when it is biased and the common mode current generated by the rejection module. According to the invention, rejection module comprises: a module for estimating a current that flows through resistive bolometer when it is subjected to the bias voltage and made insensitive to the electromagnetic radiation; and a current generator which is controlled by the estimation module and generates the current estimated by the latter as a common mode current. | 07-15-2010 |
| 20100065729 | DEVICE FOR DETECTING INFRARED RADIATION COMPRISING A RESISTIVE IMAGING BOLOMETER, A SYSTEM COMPRISING AN ARRAY OF SUCH BOLOMETERS AND A METHOD FOR READING AN IMAGING BOLOMETER INTEGRATED INTO SUCH A SYSTEM - A device for detecting infrared radiation including a resistive imaging bolometer, a mechanism for measuring drift in the electrical resistance of the bolometer relative to a reference value of the electrical resistance of the bolometer which corresponds to predetermined operating conditions of the bolometer, and a mechanism for correcting the effects of the drift in resistance or for correcting the drift itself. | 03-18-2010 |
| 20090266986 | HIGHLY ISOLATED THERMAL DETECTOR - A detector for detecting electromagnetic radiation includes a substrate and at least one microstructure including a radiation-sensitive membrane extending substantially opposite and away from the substrate. The membrane is mechanically attached to at least two longilinear, collinear retention elements, at least one of which is mechanically connected to the substrate by an intermediate post. The membrane is in electrical continuity with the substrate. At least two collinear legs are attached to each other at the level of their ends which are attached to the membrane by a mechanical connector which is substantially co-planar with the legs and membrane. The other end of at least one of the legs is integral with a rigid cross piece which is substantially co-planar with the legs and extends substantially at right angles relative to the main dimension of the legs. The cross piece is integral with the post which is integral with the substrate. | 10-29-2009 |
| 20090152470 | DEVICE FOR DETECTING AN ELECTROMAGNETIC RADIATION COMPRISING A RESISTIVE IMAGING BOLOMETER, SYSTEM COMPRISING A MATRIX OF SUCH DEVICES AND METHOD FOR READING AN IMAGING BOLOMETER OF SUCH A SYSTEM - The invention relates to a device for detecting an electromagnetic radiation comprising a resistive imaging bolometer sensitive to the electromagnetic radiation to be detected, intended to be connected electrically to a signal shaping circuit, and a resistive common mode rejection bolometer that is associated electrically with the imaging bolometer, so that the current flowing through the common mode rejection bolometer is subtracted from the current flowing through the imaging bolometer, wherein it comprises means for controlling the resistance of the common mode rejection bolometer by injecting current therein. | 06-18-2009 |
| 20090152465 | DEVICE FOR DETECTING INFRARED RADIATION COMPRISING A RESISTIVE IMAGING BOLOMETER, A SYSTEM COMPRISING AN ARRAY OF SUCH BOLOMETERS AND A METHOD FOR READING AN IMAGING BOLOMETER INTEGRATED INTO SUCH A SYSTEM - A device for detecting infrared radiation comprising a resistive imaging bolometer intended to be electrically connected to a circuit for measuring a resistance of the bolometer. It comprises means of controlling the resistance of the imaging bolometer by injecting current into the bolometer. | 06-18-2009 |
| 20090140149 | COMPONENT FOR DETECTING ESPECIALLY INFRARED ELECTROMAGNETIC RADIATION - A component for detecting electromagnetic radiation comprises: a housing defining a chamber placed under a vacuum or underpressure, one of the faces of the housing including a window which is transparent to the radiation to be detected and the chamber including at least one detector which is used to detect the radiation in question and is arranged inside said chamber essentially against the transparent window, a pump for pumping the residual gases or getter in order to maintain the vacuum or underpressure in the chamber at an acceptable level, and a thermal stabilisation device for ensuring regulation of temperature of the detector(s). The thermal stabilisation device consists of a heating resistive element which is integrated into the mass of one of the walls defining the housing. | 06-04-2009 |
| 20090020702 | ELECTROMAGNETIC RADIATION DETECTOR AND METHOD FOR MANUFACTURING SUCH A DETECTOR - This electromagnetic radiation detector comprises a reflecting substrate and at least one detection element comprising a membrane sensitive to said radiation and suspended above the substrate. The distance between the membrane and at least one detection element and the substrate is variable, said distance having a predefined spatial distribution suitable for minimizing the rapid variations of a response of the radiation detector in at least one predefined wavelength range. | 01-22-2009 |
| 20090008556 | DEVICE FOR DETECTING ELECTROMAGNETIC RADIATION, ESPECIALLY INFRARED RADIATION - A device for detecting electromagnetic radiation, especially infrared radiation, including an array of elementary bolometers which are sensitive to the incident radiation and are referred to as “active” bolometers and an additional row of bolometers which are substantially insensitive to the radiation and are referred to as “blind” bolometers. The active and blind bolometers are formed on a substrate in which a read circuit is produced for sequential addressing of each of the rows of the array and the row of blind bolometers, each of the bolometers in the same row being biased simultaneously. The read circuit includes a source for producing a reference current (I | 01-08-2009 |
| 20090008555 | DEVICE FOR DETECTING INFRARED RADIATION WITH BOLOMETRIC DETECTORS - A device for detecting infrared radiation comprising an array of bolometric detectors which are sensitive to incident radiation and are referred to as “active” and a bolometer which is insensitive to said radiation and is referred to as “blind” formed on a substrate in which a read circuit is produced for sequentially addressing each of the rows of detectors of the array, each of the active bolometers in a single row being biased simultaneously. The read circuit also comprises means of producing a reference current (I | 01-08-2009 |
