Optoelectronic camera for spectrally imaging device or a spectral photometer, photosensitive unit and protective window for such a camera as well as a method for carrying out such an arrangement

摘要

Optoelectronic camera of the spectrometer - imager or spectrophotometer type comprising an optical system, a set of photosensitive elements (3) of the ccd type disposed at the focus of said optical system, a transparent window to be protected, for example made of glass, arranged in front of the sensitive face (4) of said set of photosensitive elements (3) and a spectral scatterer allowing the spectral analysis of the scene observed by said caméra.selon the invention, the camera is characterized in that said sensitive face (4) of said set of photosensitive elements (3), directed toward said protective window is coated with a monolayer or multilayer coating of antireflection material (9), whose thickness (e) varies continuously as a function of the wavelength of the light received by said sensitive face, parallel to the axis of the dispersion of said disperser (a).