WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Options
Query Language
Stem
Sort by:
List Length
Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2005038436) SYSTEM AND METHOD FOR CAVITY RING-DOWN SPECTROSCOPY USING CONTINUOUSLY VARYING CONTINUOUS WAVE EXCITATION
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2005/038436 International Application No.: PCT/US2004/028127
Publication Date: 28.04.2005 International Filing Date: 30.08.2004
IPC:
G01J 3/433 (2006.01) ,G01N 21/39 (2006.01)
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
3
Spectrometry; Spectrophotometry; Monochromators; Measuring colours
28
Investigating the spectrum
42
Absorption spectrometry; Double-beam spectrometry; Flicker spectrometry; Reflection spectrometry
433
Modulation spectrometry; Derivative spectrometry
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
25
Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31
Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
39
using tunable lasers
Applicants: KRUSEN, Calvin, R.[US/US]; US (UsOnly)
TIGER OPTICS, L.L.C.[US/US]; 250 Titus Avenue Warrington, PA 18976, US (AllExceptUS)
Inventors: KRUSEN, Calvin, R.; US
Agent: ETKOWICZ, Jacques, L.; RatnerPrestia P.O. Box 980 Valley Forge, PA 19482, US
Priority Data:
10/667,81922.09.2003US
Title (EN) SYSTEM AND METHOD FOR CAVITY RING-DOWN SPECTROSCOPY USING CONTINUOUSLY VARYING CONTINUOUS WAVE EXCITATION
(FR) SYSTEME ET PROCEDE DE SPECTROSCOPIE PAR TEMPS DE DECLIN DE CAVITE METTANT EN OEUVRE UNE EXCITATION D'ONDES CONTINUES VARIANT CONTINUELLEMENT
Abstract:
(EN) An apparatus and method for determining the presence of a trace species in a sample gas contained in a resonant cavity (314). The apparatus comprises at least one light source (302) for generating radiation; a controller (304, 306) coupled to the at least one light source for controlling a frequency of the radiation, the controller varying the frequency of the radiation over a predetermined frequency range; and a processor (318) coupled to the resonant cavity (314) for determining a level of the trace species within the resonant cavity over the predetermined frequency range.
(FR) L'invention concerne un appareil et un procédé permettant de déterminer la présence d'espèces à l'état de traces dans un gaz échantillon contenu dans une cavité résonante (314). Cet appareil comprend : au moins une source de lumière (302) destinée à émettre un rayonnement ; une unité de commande (304, 306) couplée à la source de lumière au moins pour réguler la fréquence du rayonnement, ladite unité de commande modifiant la fréquence du rayonnement sur une gamme de fréquences prédéterminée ; et un processeur (318) couplé à la cavité résonante (314) pour déterminer le niveau d'espèces à l'état de traces contenues dans la cavité résonante, sur la gamme de fréquences prédéterminée.
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)