US5481113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for measuring concentrations of components with light scattering
Assignee: Arkray Inc
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Filing: 1994-08-02
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Granted: 1996-01-02
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Expires: 2014-08-02
Abstract
Abstract An apparatus and a method for measuring concentrations of components with light scattering allows measurement of concentrations of components in a measuring object to be accomplished in non-destructive fashion by using light in near-infrared wavelength ranges with good transmissivity and relatively low light quantum energy. The apparatus is composed of a light irradiator (1) for irradiating excited light in a near-infrared wavelength range to a measuring object (16), a photodetector (2) for receiving and spectrally separating Raman scattered light derived from the measuring object (16), and an arithmetic unit (3) for calculating concentration of a component in the measuring object (16) from intensity of the Raman scattered light and outputting a calculation result.
Inventors
- 👤 Xiaoming Dou
- 👤 Harumi Uenoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:07
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/497; G01N21/00; G01N21/62; G01N21/63; G01N21/65; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/359
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
An apparatus for measuring concentrations of components with light scattering, comprising: a light irradiator for irradiating excited light in a near-infrared wavelength range to a measuring object; a photodetector for receiving and spectrally separating Raman scattered light derived from the measuring object; and an arithmetic unit for calculating concentration of a component in the measuring object from intensity of the Raman scattered light and outputting a calculation result, wherein said component is glucose and said Raman scattered light has a wave number of 1090 to 1150 cm -1 .
Claim 2
Independent Claim
89 words
An apparatus for measuring concentrations of components with light scattering, comprising: a light irradiator for irradiating excited light in a near-infrared wavelength range to a measuring object; a photodetector for receiving and spectrally separating Raman scattered light derived from the measuring object; and an arithmetic unit for calculating concentration of a component in the measuring object from intensity of the Raman scattered light and outputting a calculation result, wherein said component is glucose and said Raman scattered light has a wave number of 1090 to 1150 cm -1 .
Claim 3
Dependent Claim
22 words
The apparatus for measuring concentrations of components with light scattering according to claim 1, wherein said light irradiator is a laser generator.
Claim 4
Independent Claim
89 words
An apparatus for measuring concentrations of components with light scattering, comprising: a light irradiator for irradiating excited light in a near-infrared wavelength range to a measuring object; a photodetector for receiving and spectrally separating Raman scattered light derived from the measuring object; and an arithmetic unit for calculating concentration of a component in the measuring object from intensity of the Raman scattered light and outputting a calculation result, wherein said component is glucose and said Raman scattered light has a wave number of 2850 to 3000 cm -1 .
Claim 5
Independent Claim
89 words
An apparatus for measuring concentrations of components with light scattering, comprising: a light irradiator for irradiating excited light in a near-infrared wavelength range to a measuring object; a photodetector for receiving and spectrally separating Raman scattered light derived from the measuring object; and an arithmetic unit for calculating concentration of a component in the measuring object from intensity of the Raman scattered light and outputting a calculation result, wherein said component is glucose and said Raman scattered light has a wave number of 2850 to 3000 cm -1 .
Claim 6
Dependent Claim
22 words
The apparatus for measuring concentrations of components with light scattering according to claim 3, wherein said light irradiator is a laser generator.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-01 | 1999-07-03 | 2000-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-01 | 2003-07-03 | 2004-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-01 | 2007-07-03 | 2008-01-02 | $7700.00 | Window Closed / Lapsed |