Patent CA682111A successfully refreshed from Google Patents.
Patent EP0306337A2 successfully refreshed from Google Patents.
EP0306337A2
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EP
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Spectrophotometer
Assignee: Kurashiki Spinning Co Ltd
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Filing: 1988-09-02
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Granted: —
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Expires: 2008-09-02
Abstract
Abstract The disclosure relates to a spectrophotometer using a pulsed xenon flashtube as a light source (1). The energy to be applied to the light source (1) of the spectrophotometer is set to be from 0.03 joules to 1.0 joule. Therefore, the intensity of light emitted from the light source is not so intense which allows the spectrophotometer to measure a spectral reflectance under the presence of a natural light or equivalents. Further, the charging period of time required for the spectrophotometer to provide a desired light emission intensity is short, so that the light source (1) is capable of emitting many flashes per second, whereby the number of data acquired within a predetermined measuring period is increased. Thus, accurate data can be obtained.
Inventors
- 👤 Taiji Kohigashi
- 👤 Miki Koyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 09:58
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/02; G01J3/10; G01J3/28; G01J3/42; G01N; G01N21/00; G01N21/17; G01N21/47; G01N21/4738; G01N21/474; G01J1/00; G01J1/10; G01J1/20; G01J1/34; G01J1/36; G01J1/16; G01J1/1626; G01J2001/1636; G01J2001/1642; G01J2003/425; G01N2201/00; G01N2201/06; G01N2201/065; G01N2201/069; G01N2201/0696
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
37 words
In a spectrophotometer in which a light source (1) comprises a pulsed xenon flashtube, wherein energy to be inputted to said light source (1) is set to be 0.03 joule or more and 1.0 joule or less.
Claim 2
Dependent Claim
37 words
In a spectrophotometer in which a light source (1) comprises a pulsed xenon flashtube, wherein energy to be inputted to said light source (1) is set to be 0.03 joule or more and 1.0 joule or less.
Claim 3
Dependent Claim
20 words
A spectrophotometer as claimed in claim 1, wherein said light source (1) emits lights 10 to 36 times a second.
Claim 4
Dependent Claim
91 words
A spectrophotometer, as claimed in claim 1, comprising: said light source (1) comprising a pulsed xenon flashtube; an integrating sphere (3) in which light from said light source (1) is emitted; a spectroscope (8) for detecting an intensity of respective wavelengths of a light reflected from an inner circumferential face of said integrating sphere (3) and an intensity of respective wavelengths of a light reflected from a sample (2) disposed on said integrating sphere (3); and a sensor (10) for detecting intensity of the light emitted from said light source (1).
Claim 5
Dependent Claim
109 words
A spectrophotometer, as claimed in claim 1, comprising: said light source (1) comprising a pulsed xenon flashtube; an integrating sphere (3) in which a light from said light source (1) is emitted; a switching means (4) for alternately selecting a light reflected from the inner circumferential face of said integrating sphere (3) and light reflected from the sample (2) disposed on said integrating sphere (3); optical system (6 and 7) for introducing, said selected light into said spectroscope (8); a synchronizing sensor (5) for detecting switching timing of said switching means (4); and a sensor (10) for detecting the intensity of the light emitted from said light source (1).
Claim 6
Dependent Claim
103 words
A spectrophotometer, as claimed in claim 4, further comprising: a compensation means (12) for calculating a ratio of an intensity of the light reflected from the inner circumferential face of said integrating sphere (3) to an intensity of the light emitted from the light source (1) and a ratio of an intensity of the light reflected from said sample (2) to an intensity of the light emitted from said light source (1) every time said light source (1) emits a light and finding said respective ratios, whereby the fluctuation of the intensity of the light emitted from said light source (1) is compensated.
Claim 7
Dependent Claim
105 words
A spectrophotometer, as claimed in claim 4, further comprising: a compensation means (12) for calculating a product of the intensities of lights reflected from the inner circumferential face of said integrating sphere (3) to a product of the intensities of lights emitted from said light source (1} and the ratio of the product of the intensities of lights reflected from said sample (2) to the product of the intensities of lights emitted from said light source (1) every time said light source (1) emits a plurality of lights, whereby the fluctuation of the intensity of the light emitted from said light source (1) is compensated.
References Cited (Backward Citations)
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