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1. (WO1992009881) POWDER FIBER OPTIC PROBE IN NIR OPTICAL ANALYZING INSTRUMENT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009881 International Application No.: PCT/US1991/008943
Publication Date: 11.06.1992 International Filing Date: 27.11.1991
IPC:
G01N 21/35 (2006.01) ,G01N 21/47 (2006.01) ,G01N 21/85 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
25
Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31
Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
35
using infra-red light
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
84
Systems specially adapted for particular applications
85
Investigating moving fluids or granular solids
Applicants:
NIRSYSTEMS INCORPORATED [US/US]; 12101 Tech Road Silver, MD 20904, US
Inventors:
McGEE, Philip, A.; US
VONBARGEN, Kenneth, Paul; US
Agent:
AITKEN, Richard, L. ; Lane, Aitken & McCann 2600 Virginia Avenue, N.W. Washington, DC 20037, US
Priority Data:
619,04728.11.1990US
Title (EN) POWDER FIBER OPTIC PROBE IN NIR OPTICAL ANALYZING INSTRUMENT
(FR) INSTRUMENT D'ANALYSE OPTIQUE FONCTIONNANT DANS LE SPECTRE PROCHE DE L'INFRAROUGE COMPRENANT UNE SONDE A FIBRES OPTIQUES POUR ANALYSER UNE POUDRE
Abstract:
(EN) In an optical instrument for infrared spectral analysis of powder, an improved fiber optic probe is provided. Fiber optics (13, 17) carry light to an from the probe (15) and the fiber optics terminate in the probe in a fiber optic endface (20). A sapphire road (23) is positioned to about the fiber optic endface (20). The sapphire rod (23) has a distal endface (24) arranged at slightly less than one-half the maximum acceptance angle of the optic fibers in the probe.
(FR) Dans un instrument d'optique permettant d'effectuer l'analyse spectrale par les infrarouges d'une matière pulvérulente, un détecteur à fibres optiques amélioré est prévu. Les fibres optiques (13, 17) transmettent la lumière se propageant vers la sonde (15) et provenant de cette dernière, lesdites fibres optiques aboutissant dans une surface terminale (20) des fibres optiques situées dans la sonde. Une tige en saphir (23) est placée de manière à venir buter contre la surface terminale des fibres optiques (20). Ladite tige en saphir (23) présente une surface terminale distale (24) située à un peu moins de la moitié de l'angle d'admission maximum des fibres optiques présentes dans la sonde.
Designated States: CA, JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0512111JPH05505884