Abstract: Vision apparatus intended to be mounted on the head of a user, including: a night vision device, for forming first virtual images; an offsetting element, for projecting the first virtual images in the field of view of the user; a shutter, such that the offsetting element is between the shutter and the eye of the user, and able to have an open position that allows light to pass and a closed position that blocks light; a switching element with an open position that authorises emission of the first virtual images or the transfer thereof to the offsetting element, and a closed position that blocks the image emission or transfer; and a controlling device controlling the shutter and the switching element according to opening and closing cycles so the shutter is closed during all or a portion of the time during which the switching element is open, and inversely.

Abstract: Vision apparatus intended to be mounted on the head of a user, including: a night vision device, for forming first virtual images; an offsetting element, for projecting the first virtual images in the field of view of the user; a shutter, such that the offsetting element is between the shutter and the eye of the user, and able to have an open position that allows light to pass and a closed position that blocks light; a switching element with an open position that authorises emission of the first virtual images or the transfer thereof to the offsetting element, and a closed position that blocks the image emission or transfer; and a controlling device controlling the shutter and the switching element according to opening and closing cycles so the shutter is closed during all or a portion of the time during which the switching element is open, and inversely.

Abstract: Night vision device including at least one sensor array, a display screen for displaying an image obtained using the sensor array, a speed measuring device mounted integral with the sensor array and the display screen, and a control device. The control device is configured to receive as input a speed measurement provided by the speed measuring device, and to control in response a frequency of image acquisition by the sensor array so that the frequency of image acquisition increases when the speed measurement increases. Thus, the night vision device prevents any sick feeling for the user when their head is moving, while using a conventional sensor array and limiting an average electric consumption.

Abstract: Image acquisition device comprising a photocathode, converting an incident flux of photons into a flux of electrons, a sensor, and a processor. The device according to the invention comprises a matrix of elementary filters, each associated with at least one pixel of the sensor, the matrix being disposed upstream of the photocathode. The matrix comprises primary color filters, and transparent filters, termed panchromatic filters. The processor is configured to: calculate a quantity, termed a useful quantity (F), for determining whether at least one zone of the sensor is in conditions of weak or strong illumination, the useful quantity being representative of a mean surface flux of photons or of electrons which is detected on a set of panchromatic pixels of the sensor; forming, only if the zone is in conditions of strong illumination, an image of the zone on the basis of the primary color pixels of this zone.

Abstract: An optronic observation device including a detector having a photocathode and a sensor arranged to receive an incident light beam. The device also including a switch to position an optical element opposite the detector in the pathway of the incident beam or to retract the optical element and a focusing element to focus an incident ray on the photocathode when the optical element is in a retracted position. When the optical element is positioned opposite the detector, it is able to focus the beam on the sensor and to filter the beam spectrally to block all or part of the wavelengths for which the responsiveness of the photocathode is greater than a given threshold.

Abstract: The invention concerns an optronic observation device comprising a detector, the detector comprising a photocathode and a sensor arranged to receive an incident light beam, the device also comprising switching means able to position an optical element opposite said detector on the pathway of the incident beam or to retract said element, the device comprising means able to focus an incident ray on the photocathode when the element is in retracted position, characterized in that the element, when positioned opposite the detector, is able to focus the beam on the sensor and to filter the beam spectrally to block all or part of the wavelengths for which the responsiveness of the photocathode is greater than a given threshold.