-
公开(公告)号：US10753863B1
公开(公告)日：2020-08-25
申请号：US16688919
申请日：2019-11-19
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Ray D. Reid , Rohit Bhartia , Arthur L. Lane
Abstract: Spectroscopic chemical analysis methods and apparatus are disclosed which employ deep ultraviolet (e.g. in the 200 nm to 300 nm spectral range) electron beam pumped wide bandgap semiconductor lasers, incoherent wide bandgap semiconductor light emitting devices, and hollow cathode metal ion lasers to perform non-contact, non-invasive detection of unknown chemical analytes. These deep ultraviolet sources enable dramatic size, weight and power consumption reductions of chemical analysis instruments. In some embodiments, Raman spectroscopic detection methods and apparatus use ultra-narrow-band angle tuning filters, acousto-optic tuning filters, and temperature tuned filters to enable ultra-miniature analyzers for chemical identification. In some embodiments Raman analysis is conducted along with photoluminescence spectroscopy (i.e. fluorescence and/or phosphorescence spectroscopy) to provide high levels of sensitivity and specificity in the same instrument.
-
公开(公告)号：US09909990B1
公开(公告)日：2018-03-06
申请号：US15263063
申请日：2016-09-12
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Rohit Bhartia , Ray D. Reid , Arthur L. Lane
IPC: G01N21/64
CPC classification number: G01N21/64 , G01J3/10 , G01J3/36 , G01J3/44 , G01N21/6486 , G01N21/65 , G01N21/8806 , G01N27/44721 , G01N33/0047 , G01N2021/6421 , G01N2021/6471 , G01N2201/06113 , G01N2201/0612 , G01N2201/062 , G01N2201/126
Abstract: Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.
-
Patent Agency Ranking
公开(公告)号：US10890533B1
公开(公告)日：2021-01-12
申请号：US16688894
申请日：2019-11-19
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Ray D. Reid , Rohit Bhartia , Arthur L. Lane
Abstract: Spectroscopic chemical analysis methods and apparatus are disclosed which employ deep ultraviolet (e.g. in the 200 nm to 300 nm spectral range) electron beam pumped wide bandgap semiconductor lasers, incoherent wide bandgap semiconductor light emitting devices, and hollow cathode metal ion lasers to perform non-contact, non-invasive detection of unknown chemical analytes. These deep ultraviolet sources enable dramatic size, weight and power consumption reductions of chemical analysis instruments. In some embodiments, Raman spectroscopic detection methods and apparatus use ultra-narrow-band angle tuning filters, acousto-optic tuning filters, and temperature tuned filters to enable ultra-miniature analyzers for chemical identification. In some embodiments Raman analysis is conducted along with photoluminescence spectroscopy (i.e. fluorescence and/or phosphorescence spectroscopy) to provide high levels of sensitivity and specificity in the same instrument.
-
公开(公告)号：US10598596B1
公开(公告)日：2020-03-24
申请号：US16362453
申请日：2019-03-22
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Rohit Bhartia , Ray D. Reid , Arthur L. Lane
Abstract: Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.
-
公开(公告)号：US10895533B1
公开(公告)日：2021-01-19
申请号：US16820309
申请日：2020-03-16
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Röhit Bhartia , Ray D. Reid , Arthur L. Lane
Abstract: Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.
-
公开(公告)号：US09915603B1
公开(公告)日：2018-03-13
申请号：US15432865
申请日：2017-02-14
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Ray D. Reid , Rohit Bhartia , Arthur L. Lane
CPC classification number: G01N21/33 , G01J3/10 , G01J3/36 , G01J3/44 , G01N21/64 , G01N21/645 , G01N21/65 , G01N27/44721 , G01N2021/6421 , G01N2021/6471 , G01N2201/06113 , G01N2201/0612 , G01N2201/068
Abstract: Spectroscopic chemical analysis methods and apparatus are disclosed which employ deep ultraviolet (e.g. in the 200 nm to 300 nm spectral range) electron beam pumped wide bandgap semiconductor lasers, incoherent wide bandgap semiconductor light emitting devices, and hollow cathode metal ion lasers to perform non-contact, non-invasive detection of unknown chemical analytes. These deep ultraviolet sources enable dramatic size, weight and power consumption reductions of chemical analysis instruments. In some embodiments, Raman spectroscopic detection methods and apparatus use ultra-narrow-band angle tuning filters, acousto-optic tuning filters, and temperature tuned filters to enable ultra-miniature analyzers for chemical identification. In some embodiments Raman analysis is conducted along with photoluminescence spectroscopy (i.e. fluorescence and/or phosphorescence spectroscopy) to provide high levels of sensitivity and specificity in the same instrument.
-
公开(公告)号：US11262301B1
公开(公告)日：2022-03-01
申请号：US17013469
申请日：2020-09-04
Applicant: Photon Systems, Inc.
Inventor： William F. Hug , Rohit Bhartia , Ray D. Reid , Arthur L. Lane
Abstract: Naphthalene, benzene, toluene, xylene, and other volatile organic compounds VOCs have been identified as serious health hazards. Embodiments of the invention are directed to methods and apparatus for near-real-time in-situ detection and accumulated dose measurement of exposure to naphthalene vapor and other hazardous gaseous VOCs. The methods and apparatus employ excitation of fluorophors native or endogenous to compounds of interest using light sources emitting in the ultraviolet below 300 nm and measurement of native fluorescence emissions in distinct wavebands above the excitation wavelength. The apparatus of some embodiments are cell-phone-sized sensor/dosimeter “badges” to be worn by personnel potentially exposed to hazardous VOCs. The badge sensor of some embodiments provides both real time detection and data logging of exposure to naphthalene or other VOCs of interest from which both instantaneous and accumulated dose can be determined.
-
-
-
-
-
-
Search Results
7
records
(took 0.014 seconds)
