EP0063431A1
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EP
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Spectroscopic analyzer system
Assignee: Konomi Masaaki
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Filing: 1982-03-31
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Granted: —
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Expires: 2002-03-31
Abstract
Abstract In a spectroscopic analyzer, light emitted from a light source (20) is spectroscopically divided into a series of light rays of different wavelength by means of a plural sets of interference filter (29a; 29b, 29c; 29d, 29e, 29f) for two-wavelength photometry adapted to intermittently and successively intercepting light from the light source or to be scanned by the light through a rotatable slit (130). An object (32) under test is irradiated sequentially by the series of light rays transmitted through an optical fiber bundle (33). Reflected light rays carrying informations of the object are sequentially applied to photoelectric converter (38). Electric signals thus produced are digitized and arithmetically processed for obtaining a plurality of data corresponding to the plural sets of the interference filters (29a; 29b, 29c; 29d, 29e; 29f).
Inventors
- 👤 Masaaki Konomi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 21:12
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/314; A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00165; A61B5/00; A61B5/0059; A61B5/0071; A61B5/0075; A61B5/0082; A61B5/0084
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
195 words
A spectroscopic analyzer system, comprising: a light source (20) having a predetermined range of wavelengths; spectroscopic means (23; 100) including a plurality of sets of interference filters (29a, 29b, 29c, 29d, 29e, 29f) for two-wavelength photometry and adapted to be operated for producing sequentially on a time series base a plurality of light rays (λ i ) of different wavelengths from said light source (20); a first light conductor (33) for transmitting sequentially the plurality of light rays (λ i ) of different wavelengths to an object (32) under analysis; a second light conductor (34) for sequentially receiving the plurality of modulated light rays reflected from or transmitted through said object (32) and transmitting the modulated light rays to photoelectric converter means (38) for converting the light rays into corresponding electric signals (Sλ i ); means (40) for digitizing said electric signals; and digital processing means (41) for storing said digital signals and executing arithmetic operations on the digital signals to obtain a plurality of data (S B -S A ; S D -S c ; S F -S E ) corresponding to each set of the interference filters (29a, 29b; 29c, 29d; 29e, 29f).
Claim 2
Dependent Claim
195 words
A spectroscopic analyzer system, comprising: a light source (20) having a predetermined range of wavelengths; spectroscopic means (23; 100) including a plurality of sets of interference filters (29a, 29b, 29c, 29d, 29e, 29f) for two-wavelength photometry and adapted to be operated for producing sequentially on a time series base a plurality of light rays (λ i ) of different wavelengths from said light source (20); a first light conductor (33) for transmitting sequentially the plurality of light rays (λ i ) of different wavelengths to an object (32) under analysis; a second light conductor (34) for sequentially receiving the plurality of modulated light rays reflected from or transmitted through said object (32) and transmitting the modulated light rays to photoelectric converter means (38) for converting the light rays into corresponding electric signals (Sλ i ); means (40) for digitizing said electric signals; and digital processing means (41) for storing said digital signals and executing arithmetic operations on the digital signals to obtain a plurality of data (S B -S A ; S D -S c ; S F -S E ) corresponding to each set of the interference filters (29a, 29b; 29c, 29d; 29e, 29f).
Claim 3
Dependent Claim
186 words
A spectroscopic analyzer system according to claim 1, said spectroscopic means comprising a light chopper (23) constituted by a rotatable disc (26) adapted to be rotated at a predetermined speed by a driving means, wherein said plurality of the interference filters (29a, 29b; 29c, 29d; 29e, 29f) are, respectively, mounted in a plurality of through-holes (28) formed in said rotatable disc (26) in a peripheral portion thereof in a circular array with adjacent ones of said interference filters (29a, 29b; 29c, 29d; 29e, 29f) being spaced by a substantially same distance from one another, said rotatable disc (26) being so positioned relative to an optical path (24) of light emitted by said light source (20) that said optical path (24) is intermittently and successively intercepted by said interference filters (29a, ..., 29f) and wherein said first light conductor (33) has an inlet end disposed in succession to said light chopper (23) so as to receive light rays (a i ) produced by said interference filters (29) successively on a time division base, said first light conductor being constituted by a bundle of optical fibers (36) .
Claim 4
Dependent Claim
105 words
A spectroscopic analyzer system according to claim 2, said second light conductor (34) being constituted by a bundle of optical fibers (36), wherein said optical fibers (36, 36) of said first and second light conductors (33, 34) are intermingly combined together at respective outlet and inlet end portions to thereby constitute a probe portion adapted to be located at a selected position close to said object (32) under analysis and having a flat end in plane in which ends of said optical fibers (36, 37) being randomly arrayed, said second light conductor having an outlet end optically coupled to said photoelectric converter means (38) .
Claim 5
Dependent Claim
37 words
A spectroscopic analyzer system according to claim 2, wherein an interference filter (29g) for fluorescence excitation is additionally provided in said disc (26) in circular alignment with said interference filters (29a, ..., 29d) for the two-wavelength photometry.
Claim 6
Dependent Claim
47 words
A spectroscopic analyzer system according to claim 2, wherein a third light conductor (34b) is branched from said second light conductor (34) and optically coupled to second photoelectric converter means (38') by way of an interposed fluorescence selecting filter (47) and hence to said digitizing means (40).
Claim 7
Dependent Claim
63 words
A spectroscopic analyzer system according to claim 2, wherein a reference signal generating means is provided in combination with said light chopper (25) for producing a reference signal to be utilized in operations of said digitizing means (40) and said digital processing means (41) for synchronization and identification of correspondence between said interference filters (29) and said electric signals (Sλ i ) .
Claim 8
Dependent Claim
172 words
A spectroscopic analyzer system according to claim 1, said spectroscopic means (100) comprising a cylindrical slit member (123) mounted rotatably around said light source (20) and having a peripheral wall formed with a slit (130), and a cylindrical stationary housing (121) disposed so as to enclose therein said rotatable cylindrical slit member (123), wherein said plurality of the interference filters (29a, 29b; 29c, 29d; 29e, 29f) are fixedly disposed in a peripheral wall of said stationary cylindrical member (121) in a circular array so as to be scanned successively with light emitted from said light source (20) through said slit (130) upon rotation of said cylindrical slit member (123), said interference filters (29a, etc.) being spaced by a substantially same distance from one another, and wherein said interference filters (29a, 29b, 29c, 29d, 29e and 29f) being optically coupled to inlet ports of optical fiber bundles (33a, 33b, 33c, 33d, 33e, 33f), respectively, said optical fiber bundles (33a, etc.) having respective outlet end portions randomly integrated together into said first conductor (33).
Claim 9
Dependent Claim
107 words
A spectroscopic analyzer system according to claim 7, said second light conductor (34) being constituted by a bundle of optical fibers (36), wherein said optical fibers (36, 37) of said first and second light conductors (33, 34) are intermingly combined together at respective outlet and inlet end portions to thereby constitute a probe portion adapted to be located at a selected position close to said object (32) under analysis and having a flat end in a plane in which ends of said optical fibers (33a, ..., 33f, 42) being randomly arrayed, said second light conductor having an outlet end optically coupled to said photoelectric converter means (38).
Claim 10
Dependent Claim
38 words
A spectroscopic analyzer system according to claim 7, wherein an interference filter for fluorescence excitation is additionally provided in said stationary cylindrical housing (121) in circular alignment with said interference filters (29a, ..., 29d) for the two-wavelength photometry.
Claim 11
Dependent Claim
50 words
A spectroscopic analyzer system according to claim 7, wherein a third light conductor (34b) is branched from said second light conductor (34) and optically coupled to second photoelectric converter means (38') by way of an interposed fluorescence selecting filter (47), said means (38') being connected to said digitizing means (40).
Claim 12
Dependent Claim
60 words
A spectroscopic analyzer system according to claim 7, wherein a reference signal generating means (138) is provided in said stationary cylindrical housing (121) for producing a reference signal to be utilized in operation of said digitizing means (40) and said digital processing means (41) for synchronization and identification of correspondence between said interference filters (29) and said electric signals (SX).
Claim 13
Dependent Claim
60 words
A spectroscopic analyzer system according to one of claims 4, 5, 9 and 10, wherein a fourth light conductor (34c) is branched from said second light conductor (34) and optically coupled to a third photoelectric converter means (38") by way of an interposed fluorescence selecting filter (47), said third photoelectric converter means (38") being connected to said digitizing means (40).
References Cited (Backward Citations)
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