| 摘要 |
The present disclosure provides a liquid object (103) identification apparatus (100) and method. The apparatus (100) includes: a laser (101) configured to emit an exciting light; an optical module (102) configured to guide the exciting light to the liquid object (103) and collect a Raman scattered light from the liquid object (103); and a spectrometer (104) configured to receive the Raman scattered light and to form a Raman spectrum of the liquid object (103), wherein the optical module (102) has a first illumination optical path (110), a second illumination optical path (120; see Fig. 2) and a collecting optical path (130), and the first illumination optical path (110) and the collecting optical path (130) at least partly share a common optical axis, and the second illumination optical path (120) has an optical axis deviated from the optical axis of the collecting optical path (130), and the optical module (102) further includes an optical path switching device (105), such as a deflectable reflector or prism, configured to switch the illumination optical path (110, 120) depending on a package (109) of the liquid object (103). The apparatus and method are adapted for various kinds of packages (109), such as, transparent package, semi-transparent or opaque package. Raman signals or fluorescent light signals produced by the package (109) itself are suppressed or reduced. |
