摘要:
The general field of the invention is that of optical systems comprising a zoom lens (Z) and an optical detection unit with depth estimation, said optical detection unit with depth estimation comprising a microlens array (MML) and a matrix detector (DM, the microlens array being arranged in such a way that the image of the focal plane of the zoom is focused by the microlens array in the plane of the matrix detector. The optical system according to the invention comprises calculation means for calculating, for a first focal length of the zoom and for a determined object, the estimated distance (DE) of said object and the measurement uncertainty (I) for said estimation, as a function of said first focal length and said estimated distance and, said estimated distance being known, optimisation means for determining at least one second focal length of the zoom having a measurement uncertainty which is less than that for said estimation.
摘要:
The general field of the invention is that of devices for photonic generation of arbitrary microwave signals having linear frequency modulation, including a laser (1), an assembly (2) for shaping the transmitted signal and a photoreceptor (3), the bandwidth of which is in the microwave frequency range. The shaping assembly comprises: a first optical splitter (20); a first optical pathway comprising a frequency-shifted loop including an optical splitter (50), a first optical amplifier (60), an optical isolator (70), a first spectral optical filter (75) and an acousto-optical frequency shifter (80); a second optical pathway comprising an electro-optical frequency shifter (30); a second optical splitter (40); a second optical amplifier (90); and a second optical filter (100); the acousto-optical shifting frequency, the electro-optical shifting frequency and the amplification gain of the first optical amplifier being adjustable.
摘要:
A calibration device for instrumentation for medical imaging, also called a “phantom,” including a matrix. The calibration device includes at least one additive for simulating the autofluorescence properties of an organ or of a living tissue in the spectral band covering the red and near infrared, said additive belonging to the porphyrin class, such as protoporphyrin IX.
摘要:
Le domaine général de l'invention est celui des dispositifs de verrouillage et d'extraction (10) d'un connecteur électrique (3) dans un boîtier électronique (1), ledit boîtier électronique comportant l'embase électrique (2) correspondant audit connecteur électrique, la connexion et l'extraction du connecteur électrique étant réalisée dans une direction déterminée, parallèle aux contacts électriques du connecteur électrique. Le connecteur selon l'invention est monté dans un assemblage mécanique comportant au moins un épaulement (4). Le boîtier électronique comporte une structure mécanique comportant au moins une mâchoire mobile (12, 13, 22, 23, 31, 33) agencée de manière à saisir l'épaulement du connecteur et à lui imprimer un mouvement de translation dans ladite direction déterminée, facilitant ainsi la connexion ou l'extraction dudit connecteur électrique dans son embase électrique.