| 摘要 |
<p>The invention relates to a device for measuring a spectrum of a light beam in a previously selected range of wavelengths, a device known as a spectrometer (10), the spectrum being generated by a fluid to be analysed, said spectrometer comprising: at least one light source (2); a measurement cell (4), comprising the fluid to be analysed; a measurement detector (5), placed on an optical path travelled by an optical measurement beam (22), said measurement beam (22) being emitted by the light source (2) and hitting the measurement cell (4); and a reference detector (6), placed on an optical path travelled by an optical reference beam (23), said reference beam (23) being emitted by the light source (2) and not hitting the measurement cell (4), characterised in that the spectrometer (10) is onboard an automobile and comprises a means (3) for shaping an incident optical beam emitted by said at least one light source (2) and for separating said optical beam into a measurement beam (22) and a reference beam (23) in the form of a waveguide.</p> |
