Patent US1113441A successfully refreshed from Google Patents.
EP0174722A2
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Fluorometer
Assignee: Thermo Fisher Scientific Oy
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Filing: 1985-07-26
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Granted: —
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Expires: 2005-07-26
Abstract
Abstract Fluorometer in whose reference channel (5) there is optical fiber made of a fluorescent material. The optical fiber acts as an internal standard.
Inventors
- 👤 Hannu Harjunmaa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 02:52
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/27; G01N21/274; G01N21/278; G01N21/62; G01N21/63; G01N21/64; G01N21/645; G01N2021/6484; G01N21/276
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
Fluorometer, which comprises a light source (1), a beam distributor (3) for dividing the light to a measurement channel and to a reference channel, a beam exchanger (4) for admitting the light alternatingly to the measurement channel and to the reference channel, an optical system (6, 8) for applying the light of the measurement channel to the sample and for passing the fluorescent light emitted from the sample to the light detector, filters or equivalent (10), if necessary, for choosing a certain wavelength band from the fluorescent light to the light detector (11), and an optical system (5) for passing the light of the reference channel to the same light detector, characterized in that in the optical system (5) for passing the light of the reference channel to the light detector there is an optical fiber or bundle of fibers, which is made exclusively or partly of a fluorescent material.
Claim 2
Dependent Claim
150 words
Fluorometer, which comprises a light source (1), a beam distributor (3) for dividing the light to a measurement channel and to a reference channel, a beam exchanger (4) for admitting the light alternatingly to the measurement channel and to the reference channel, an optical system (6, 8) for applying the light of the measurement channel to the sample and for passing the fluorescent light emitted from the sample to the light detector, filters or equivalent (10), if necessary, for choosing a certain wavelength band from the fluorescent light to the light detector (11), and an optical system (5) for passing the light of the reference channel to the same light detector, characterized in that in the optical system (5) for passing the light of the reference channel to the light detector there is an optical fiber or bundle of fibers, which is made exclusively or partly of a fluorescent material.
Claim 3
Dependent Claim
22 words
Fluorometer as claimed in claim 1, characterized in that the optical fiber or bundle of fibers are placed in a thermostated space.
Claim 4
Dependent Claim
30 words
Fluorometer as claimed in claim 2, characterized in that the optical fiber or bundle of fibers is enclosed in a jacket in whose interior there is additionally a heating resistor.
Claim 5
Dependent Claim
61 words
Method for the measurement of fluorescence, wherein the excitation light is passed to the light detector (11) alternatingly through the measurement channel, where there is a sample (7), and alternatingly through the reference channel, characterized in that in the reference channel there is an optical fiber or bundle of fibers (5), which is made exclusively or partly of a fluorescent material.
Claim 6
Dependent Claim
61 words
Method for the measurement of fluorescence, wherein the excitation light is passed to the light detector (11) alternatingly through the measurement channel, where there is a sample (7), and alternatingly through the reference channel, characterized in that in the reference channel there is an optical fiber or bundle of fibers (5), which is made exclusively or partly of a fluorescent material.
Claim 7
Dependent Claim
26 words
Method as claimed in claim 4 , characterized in that the temperature of the optical fiber made of fluorescent material is kept constant during the measurement.
References Cited (Backward Citations)
No citation records indexed.
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