摘要:
Method for manufacturing an optical unit (1) comprising a plurality of glass-sheets (2) having an aspherical shape, arranged superimposed and spaced apart to form a stack (10), comprising the steps of: - arranging either a pre-bent or a flat glass-sheet (2) on a reference surface (5) having the geometry desired to be reproduced; - cold-deforming said glass-sheet (2) so as to adhere it onto the reference surface (5); - integrating said glass-sheet (2) with a preceding element (4, 2) of said stack (10) in a predetermined relative position; and - repeating the preceding steps till stack completion. The integration step comprises fastening said glass-sheet (2) in a position spaced from the preceding element (4, 12) of the stack (10) by means of bars (3) arranged spaced apart from one another.
摘要:
An apparatus for non-invasive inspection of solid bodies by muon imaging, comprising a receiver (3) adapted to intercept a muon flux associated with cosmic rays passing through a portion of a body to be inspected, sensor means (4) adapted to detect the amount of photons or Cherenkov radiation associated with the intercepted muon flux, electronic processing means adapted to reconstruct energy and direction of the muon flux incident the portion of the body to be inspected to calculate the local density thereof. The receiver (3) comprises an optical device (5) provided with at least one receiving surface (6) having reflecting and/or diffractive properties adapted to convey the Cherenkov radiation associated with muons toward the sensor means (4), these latter comprising a multipixel detection chamber (8) adapted to provide an annular image of the muon having radius and position variable as a function of the energy and direction of muon flux.
摘要:
A method for applying a carbon-based reflective overcoating on a grazing incidence optical unit comprising a substrate and a coating of a high-density material chosen from the group comprising gold, platinum, iridium, palladium, rhodium, ruthenium, chrome and nickel or a low-density material such as carbon or B4C; the method comprises the step of treating the optical unit with a solution or gaseous phase containing at least one polymer precursor material to create the overcoating through absorption of the polymer material on the coating.