| 摘要 |
An apparatus for the non-destructive testing of the integrity and/or suitability of sealed packagings having at least one portion (111,121) at least partially optically transparent, preferably food packagings, in particular through a verification of conformity of the atmosphere inside such food packagings, wherein the apparatus comprises at least one inspection area (20); at least one laser source (11) with an optical axis (A); at least one detector (13) positioned so as to detect at least one portion of back-scattered beams (12') following the collision of the laser beam (12) emitted by the laser source (11) with a target (100,200) and provide-at the output-a representative datum of an absorption spectrum of the gas. The apparatus includes means for measuring a distance covered by the laser beam (12) and electronic processing means for calculating the concentration of the gas.
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