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Optical path difference compensation mechanism for acquiring time-series signal of time-series conversion pulse spectrometer 実績あり

外国特許コード F110004160
整理番号 V238P002WO
掲載日 2011年7月12日
出願国 欧州特許庁(EPO)
出願番号 04771887
公報番号 1662249
公報番号 1662249
出願日 平成16年8月19日(2004.8.19)
公報発行日 平成18年5月31日(2006.5.31)
公報発行日 平成26年10月15日(2014.10.15)
国際出願番号 JP2004011926
国際公開番号 WO2005019809
国際出願日 平成16年8月19日(2004.8.19)
国際公開日 平成17年3月3日(2005.3.3)
優先権データ
  • 2004JP011926 (2004.8.19) WO
  • 特願2003-299373 (2003.8.22) JP
発明の名称 (英語) Optical path difference compensation mechanism for acquiring time-series signal of time-series conversion pulse spectrometer 実績あり
発明の概要(英語) It is an object to provide a time-domain pulsed spectroscopy apparatus in which time-domain pulsed spectroscopy of multiple samples, states thereof, and so on can be carried out easily and in a short period of time.
A time-domain pulsed spectroscopy apparatus of the present invention comprises a pulsed laser light source; a splitting unit configured to split pulsed laser light from the pulsed laser light source into excitation pulsed laser light and detection pulsed laser light; a pulsed-light emitting unit; a detector; a sample holder configured to hold the sample; and sample-unit entrance and exit optical systems configured to guide the pulsed light from the pulsed-light emitting unit to the sample and to guide to the detector pulsed light reflected from or transmitted through the sample due to the irradiation; wherein the time-domain pulsed spectroscopy apparatus further comprises: at least one optical-path-length varying unit for set ting a photometric range, disposed in an incident-side optical path from the splitting unit to the pulsed-light emitting unit and/or in a detection-side optical path from the splitting unit to the detector; and at least one optical delay unit for the wave form signal measurement, disposed in the incident-side optical path from the splitting unit to the pulsed-light emitting unit and/or in the detection-side optical path from the splitting unit to the detector.(see diagramm) (see diagramm)
特許請求の範囲(英語) [claim1]
1. A time-domain pulsed spectroscopy apparatus (20) comprising: a pulsed laser light source (1); a splitting unit (2) configured to split pulsed laser light from the pulsed laser light source (1) into excitation pulsed laser light (L 2) and detection pulsed laser light (L 3); a pulsed-light emitting unit (5) configured to emit pulsed light including wavelengths in the far-infrared wavelength region due to irradiation of the excitation pulsed laser (L 2); a detector (12) configured to detect a wave form signal of the electric field intensity of reflected or transmitted pulsed light from the sample (8) onto which the pulsed light from the pulsed-light emitting unit (5) is radiated; a sample holder (31) configured to hold the sample (8) to form a sample-unit comprising the sample with the sample holder; and sample-unit entrance (32, 33, 34) and exit optical systems (35, 36, 37) configured to guide the pulsed light from the pulsed-light emitting unit (5) to the sample (8) and to guide to the detector (12) pulsed light reflected from or transmitted through the sample (8) due to the irradiation,
wherein the time-domain pulsed spectroscopy apparatus further comprises: at least one optical-path-length varying unit (41) for setting a photometric range, disposed in an incident-side optical path from the splitting unit (2) to the pulsed-light emitting unit (5) and/or in a detection-side optical path from the splitting unit (2) to the detector (12); and at least one optical delay unit (42) for the wave form signal measurement, disposed in the incident-side optical path from the splitting unit (2) to the pulsed-light emitting unit (5) and/or in the detection-side optical path from the splitting unit (5) to the detector (12), characterised in that the optical-path-length varying unit for setting a photometric range is composed of one, two, or more fixed reflectors (81, 82, 83); and either reflector (81, 82, 83) includes, at the incident side of the pulsed light to the reflector, a gate member (71, 73, 75) configured to pass or block the pulsed light to the reflector, and by switching between passing or blocking, it is possible to add an optical path via one, two, or more of the reflectors (81, 82, 83) to extend the optical path length and/or to skip one, two, or more of the reflectors to shorten the optical path length.
[claim2]
2. A time-domain pulsed spectroscopy apparatus according to Claim 1, wherein passing or blocking of at least one of the gate members is performed by inserting and removing the gate member, by translational motion, into and from the optical path.
[claim3]
3. A time-domain pulsed spectroscopy apparatus according to Claim 1, wherein passing or blocking of at least one of the gate members is performed by inserting and removing the gate member, by rotation, into and from the optical path.
[claim4]
4. A time-domain pulsed spectroscopy apparatus according to one of Claims 1 to 3, further comprising: a driving device configured to automatically scan the optical-path-length varying unit and/or the optical delay unit; and a computer control apparatus configured to automatically control the driving device.
[claim5]
5. A time-domain pulsed spectroscopy apparatus according to one of Claims 1 to 4, wherein the sample holder and the sample-unit entrance and exit optical systems are provided inside an auxiliary optical unit that can be attached to and removed from the time-domain pulsed spectroscopy apparatus to enable replacement thereof.
[claim6]
6. A time-domain pulsed spectroscopy apparatus according to Claim 5 having an optical design that provides optical alignment with respect to the auxiliary optical unit.
[claim7]
7. A time-domain pulsed spectroscopy apparatus according to one of Claims 1 to 6 wherein
from the pulsed-light emitting unit to the sample-unit entrance optical system and/or from the detector to the sample-unit exit optical system, one or a plurality of planar mirrors and one or a plurality of aspherical mirrors are disposed in this order.
  • 出願人(英語)
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • IHI
  • 発明者(英語)
  • NISHIZAWA SEIZI
  • IWAMOTO TOSHIYUKI
国際特許分類(IPC)
欧州特許分類/主・副
  • G01J003/08
  • G01N021/35F
  • S01N201/069P
  • S01N201/069P3
指定国 Contracting States: DE GB
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