G - Physics – 01 – J
Patent
G - Physics
01
J
73/57
G01J 3/28 (2006.01) G01J 3/02 (2006.01) G01J 3/42 (2006.01) G01N 21/31 (2006.01)
Patent
CA 1136882
ABSTRACT OF THE DISCLOSURE A spectrophotometric apparatus for measuring at a distance, of the type comprising a spectrophotometer having a light source, a detector, an optical system for defining a measuring light beam and a reference light beam and an optical well, further comprising: - at least one measuring cell adapted to receive a solution to be analysed and at a distance from said spectro- photometer, - a measuring loop comprising a first optical system housed in said optical well for directing the measuring beam out of said optical well, a first fibre optic a first end of which receives said light beam whilst its other end is placed facing one or more lenses arranged on the input surface of the or each cell, at least one second fibre optic connecting one or more second lenses arranged on the output surface of the or each cell at an input of said optical well, and a second optical system housed in said optical well and adapted to direct the light beam emitted by said second fibre optic out of said well towards said emitter, and - a reference loop comprising a third optical system housed in said optical well for directing the reference beam out of said optical well, at least one fibre optic a first end of which receives said measuring light beam, whilst the other end is connected to an input of said optical well and a fourth optical system adapted to direct the light beam emitted by said fibre optic towards said detector, said fibre optic of the reference loop being of a length and a nature such that the reference loop substantially compensates the measuring loop.
344463
Boisde Gilbert
Chevalier Gilbert
Perez Jean-Jacques
Commissariat A. L'energie Atomique
Goudreau Gage & Associates
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