Optoelectronic camera

Details Optoelectronic camera Optoelectronic camera

G - Physics

01

J

G01J 3/28 (2006.01) H04N 5/335 (2006.01)

Patent

CA 2168683

A spectro-imager or spectrophotometer type optoelectronic camera comprising an optical system, a set of light-sensitive CCD elements (3) at the focus of said optical system, a clear protective window made, for example, of glass and placed in front of the sensitive side (4) of said set of light-sensitive elements (3), and a spectral scatterer for spectrally analysing the scene before said camera. Said sensitive side (4) of the set of light-sensitive elements (3), facing said protective window, is provided with a single- or multi-layer anti-reflective coating (9) with a thickness (e) that is continuously variable depending on the wavelength of the light picked up by said sensitive side in a direction parallel to the scattering axis of said scatterer (A).

- Caméra optoélectronique du type spectro-imageur ou spectro- photomètre comportant un système optique, un ensemble d'éléments photosensibles (3) de type CCD disposé au foyer dudit système optique, une fenêtre transparente de protec- tion, par exemple en verre, disposée devant la face sensible (4) dudit ensemble d'éléments photosensibles (3) et un disperseur spectral permettant l'analyse spectrale de la scène observée par ladite caméra. - Selon l'invention, ladite caméra est caractérisée en ce que ladite face sensible (4) dudit ensemble d'éléments photosensibles (3), dirigée vers ladite fenêtre de protec- tion, est revêtue d'un revêtement monocouche ou multicou- che de matière antireflet (9), dont l'épaisseur (e) varie de façon continue en fonction de la longueur d'onde de la lumière reçue par ladite face sensible, parallèlement a l'axe de dispersion dudit disperseur (A).

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