| 摘要 |
<p>The invention concerns a system for detecting humidity on a part (1) surface (10), comprising: a light source (2) emitting a source beam (F1); a diffraction grating (3) receiving said source beam (F1), and supplying at least a diffracted beam (F'2) and a beam transmitted (F2) undiffracted; an optical system (4) focusing or collimating one at least of the beams supplied by the diffraction grating into a specific zone (11) of the surface (10); a photodetector (5) capable of receiving light from the surface (10) zone (11) through the optical system and the diffraction grating.</p> |
