| 摘要 |
The device for measuring physical quantities is essentially based on the use of an assembly comprising a sensor connected by a single optical fibre to a source and a detector, possibly via a directional coupler. The sensor essentially comprises a support element (11) provided with a central bore arranged in order to house an end piece (12), in which is mounted a segment of stripped optical fibre (13). At the front end of the support element (11) is mounted a lens holder piece (17) used to support a spherical lens (19), for example made of corundum. At the rear end of the support element (11) are mounted a sleeve (21) and a clamping ring (22), which interact in order to ensure stable positioning of the end piece (12). <IMAGE>
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