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公开(公告)号：DE3719806A1
公开(公告)日：1988-12-22
申请号：DE3719806
申请日：1987-06-13
Applicant: BASF AG
Inventor： AUWETER HELMUT DR , HORN DIETER DR , LILGE DIETER DR , WORTMANN JUERGEN DR
Abstract: Optical fibre sensor for measuring the Doppler broadening of scattered laser light according to the principle of quasi-elastic light scattering (QELS), the scattered light coming from particles in motion, characterised in that the output face (7) for the laser light is bevelled at the end of a monomode or multimode optical fibre (3), which is used as an immersion probe, at an angle of inclination of 0
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公开(公告)号：DE3867326D1
公开(公告)日：1992-02-13
申请号：DE3867326
申请日：1988-06-08
Applicant: BASF AG
Inventor： AUWETER HELMUT DR , HORN DIETER DR , LILGE DIETER DR , WORTMANN JUERGEN DR
Abstract: The optical fibre sensor measures the Doppler shift of dispersed laser light using a quasi-elastic light scattering principle, where the light is dispersed by incidence with moving particles. The exit face (7) for the laser light is provided at the end of a monomode or multi mode optical fibre (3) acting as an immersion probe, with an angle of between 0 and 15 degrees and pref between 1 and 6 degrees between the optical axis (8) of the optical fibre (3) and the normal (9) to the exit face (7). Pref. the dispersed light is fed back to the optical fibre (3) via the exit face (7) for coupling to a detector (12), pref. with an associated signal processing circuit.
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公开(公告)号：AT71226T
公开(公告)日：1992-01-15
申请号：AT88109082
申请日：1988-06-08
Applicant: BASF AG
Inventor： AUWETER HELMUT DR , HORN DIETER DR , LILGE DIETER DR , WORTMANN JUERGEN DR
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