EP0417700A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvement in attenuated total reflection spectroscopy
Assignee: Israel Atomic Energy Commission
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Filing: 1990-09-10
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Granted: —
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Expires: 2010-09-10
Abstract
Abstract Method of ATR spectroscopy and substrate probe for use therein. The probe comprises a single optical fibre sensor, a bundle of such sensors, the sensing zone of each sensor being a small diameter cylindrical portion merging at least on the side of the light intake end into a frustoconical portion whose large diameter base is turned away from said small diameter cylindrical portion.
Inventors
- 👤 Aharon Bornstein
- 👤 Dan Wolfman
- 👤 Mordechai Katz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 17:40
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/55; G01N21/552; G01N21/41; G01N21/43; G01N21/431; G01N2021/432; G01N21/84; G01N21/85; G01N21/8507
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
88 words
A method of performing a spectroscopic measurement by the attenuated total reflection (ATR) technique employing a tubular probe adapted to hold a substrate medium and fitted within with at least one optical fibre sensor having an unclad sensing zone and light intake and emitting ends, characterised in that the sensing zone of each sensor is a small diameter cylindrical portion merging at least on the side of the light intake end into a frustoconical portion whose large diameter base is turned away from said small diameter cylindrical portion.
Claim 2
Independent Claim
88 words
A method of performing a spectroscopic measurement by the attenuated total reflection (ATR) technique employing a tubular probe adapted to hold a substrate medium and fitted within with at least one optical fibre sensor having an unclad sensing zone and light intake and emitting ends, characterised in that the sensing zone of each sensor is a small diameter cylindrical portion merging at least on the side of the light intake end into a frustoconical portion whose large diameter base is turned away from said small diameter cylindrical portion.
Claim 3
Dependent Claim
49 words
A method according to claim 1, characterised by using a probe in which the small diameter cylindrical portion of the sensing zone of each sensor of the probe is longitudinally flanked by two frustoconical portions each having its large diameter base turned away from said small diameter cylindrical portion.
Claim 4
Dependent Claim
38 words
A method according to claim 2, characterised by using a probe in which the large diameter base side of each frustoconical portion of each sensor merges into an outer cylindrical portion having the same diameter of said base.
Claim 5
Independent Claim
20 words
A method according to any one of claims 1 to 3, characterised by using a probe having a single sensor.
Claim 6
Independent Claim
22 words
A method according to any one of claims 1 to 3, characterised by using a probe with a bundle of discrete sensors.
Claim 7
Dependent Claim
38 words
A method according to claim 5, characterised by using a probe with a bundle of sensors in which all sensing zones are fused together while the frustoconical portions and the intake and emitting end portions remain discrete entities.
Claim 8
Dependent Claim
49 words
A method according to claim 6, characterised in that in said bundle each discrete intake end portion is associated with a discrete emitting end portion to form a couple and each such couple is designed to transmit light at a wavelength different from that transmitted by all other couples.
Claim 9
Dependent Claim
26 words
A method according to claim 7, characterised in that each of the discrete emitting end portions of the bundle is connected to a separate photoelectric detector.
Claim 10
Dependent Claim
28 words
A method according to claim 8 characterised in that simultaneous readings of the light emitted from each discrete emitting end portion is processed into an integrated absorption curve.
Claim 11
Independent Claim
50 words
A method according to any one of claims 1 to 9 for the performance of spectroscopic measurements with light in any one of the ultraviolet, visible and near infrared regions, characterised in that a probe is used in which each sensor is made of silica or fluoride based glass fibre.
Claim 12
Independent Claim
44 words
A method according to any one of claims 1 to 9 for the performance of spectroscopic measurements with light in the far infrared region, characterised in that a probe is used in which each sensor is made of a chalcogenic compound based glass fibre.
Claim 13
Dependent Claim
94 words
For use in the performance of a method according to any one of claims 1 to 11, a probe comprising a tubular casing adapted to hold a substrate medium and fitted within with at least one optical fibre sensor having an unclad sensing zone and light intake and emitting ends, characterised in that the unclad sensing zone of each sensor is a small diameter cylindrical portion merging at least on the side of the light intake end into a frustoconical portion whose large diameter base is turned away from said small diameter cylindrical portion.
Claim 14
Dependent Claim
42 words
A probe according to claim 12, characterised in that the small diameter cylindrical portion of the sensing zone of each sensor is longitudinally flanked by two frustoconical portions each having its large diameter base turned away from said small diameter cylindrical portion.
Claim 15
Dependent Claim
36 words
A probe according to claim 12 or 13, characterised in that the large diameter base side of each frustoconical portion of each sensor merges into an outer cylindrical portion having the same diameter as said base.
Claim 16
Dependent Claim
22 words
A probe according to any one of claims 12 to 14, characterised in that the cylindrical casing has a circular cross-sectional shape.
Claim 17
Dependent Claim
22 words
A probe according to any one of claims 12 to 14, characterised in that the cylindrical casing has a polygonal cross-sectional shape.
Claim 18
Dependent Claim
17 words
A probe according to any one of claims 12 to 16, characterised by comprising a single sensor.
Claim 19
Dependent Claim
19 words
A probe according to any one of claims 12 to 16, characterised by comprising a bundle of discrete sensors.
Claim 20
Dependent Claim
40 words
A probe according to any one of claims 12 to 16 characterised by comprising a bundle of sensors in which all sensing zones are fused together while the frustoconical portions and the intake and emitting end portions remain discrete entities.
Claim 21
Dependent Claim
47 words
A probe according to claim 19, characterised in that each discrete end intake end portion is associated with a discrete emitting end portion to form a couple and each such couple is designed to transmit light at a wavelength different from that transmitted by all other couples.
Claim 22
Dependent Claim
24 words
A probe according to any one of claims 12 to 20, characterised by each sensor being made of silica or fluoride based glass fibre.
Claim 23
Dependent Claim
23 words
A probe according to any one of claims 12 to 21, characterised by each sensor being made of chalcogenic compound based glass fibre.
References Cited (Backward Citations)
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