公开(公告)号：US20180136133A1

公开(公告)日：2018-05-17

申请号：US15461613

申请日：2017-03-17

申请人： BWT PROPERTY, INC.

发明人： Jun Zhao ,  Xin Jack Zhou ,  Sean Xiaolu Wang

IPC分类号： G01N21/65 ,  G01J3/02

CPC分类号： G01N21/65 ,  G01J3/0216 ,  G01J3/0218 ,  G01J3/4406 ,  G01N21/474 ,  G01N21/645 ,  G01N2201/064 ,  G01N2201/08

摘要： This invention relates to a light delivery and collection device for performing spectroscopic analysis of a subject. The light delivery and collection device comprises a reflective cavity with two apertures. The first aperture is configured to receive excitation light which then diverges and projects onto the second aperture. The second aperture is configured to be applied close to the subject such that the reflective cavity substantially forms an enclosure covering a large area of the subject. The excitation light enters and interacts with the covered area of the subject to produce inelastic scattering and/or fluorescence emission from the subject. The reflective cavity has a specular reflective surface with high reflectivity to the excitation light as well as to the inelastic scattering and/or fluorescence emission from the subject. The reflective cavity reflects the excitation light that is reflected and/or back-scattered from the subject and redirects it towards the subject. This causes more excitation light to penetrate into a diffusely scattering subject to produce inelastic scattering and/or fluorescence emission from inside of the subject hence enabling sub-surface measurement. In addition, the reflective cavity reflects the inelastic scattering and/or fluorescence emission from the subject unless the inelastic scattering and/or fluorescence emission either emits from the first aperture of the reflective cavity to be measured with a spectrometer device, or re-enters the subject at the second aperture. This multi-reflection process improves the collection efficiency of the inelastic scattering or fluorescence emission from the subject.

公开(公告)号：US20180136132A1

公开(公告)日：2018-05-17

申请号：US15378156

申请日：2016-12-14

申请人： BWT PROPERTY, INC.

发明人： Jun Zhao ,  Xin Jack Zhou ,  Sean Xiaolu Wang

IPC分类号： G01N21/65 ,  G01J3/02

CPC分类号： G01N21/65 ,  G01J3/0216 ,  G01J3/44 ,  G01N2021/651 ,  G01N2201/0636 ,  G01N2201/068 ,  G01N2201/08

摘要： This invention relates to a light delivery and collection device for measuring Raman scattering from a large area of a sample. The light delivery and collection device comprises a reflective cavity made of a material or having a surface coating with high reflectivity to the excitation light and the Raman scattered light. The reflective cavity has two apertures. The first aperture is configured to receive the excitation light which then projects onto the second aperture. The second aperture is configured to be applied close to the sample such that the reflective cavity substantially forms an enclosure covering a large area of the sample. The excitation light produces Raman scattered light from the covered area of the sample. The reflective cavity reflects any excitation light and Raman light scattered from the sample unless the excitation light and the Raman scattered light either emit from the first aperture to be measured with a spectrometer device, or are re-scattered by the sample at the second aperture. The multi-reflection of the reflective cavity greatly improves the excitation efficiency of Raman scattering from the sample and in the meantime enhances its collection efficiency. In addition, it also causes more excitation light to penetrate into a diffusely scattering sample and allows efficient collection of the Raman scattered light generated thereof, hence enabling sub-surface Raman scattering measurement.

公开(公告)号：US20180136131A1

公开(公告)日：2018-05-17

申请号：US15349510

申请日：2016-11-11

申请人： BWT PROPERTY, INC.

发明人： Jun Zhao ,  Xin Jack Zhou

IPC分类号： G01N21/65

CPC分类号： G01N21/65 ,  G01N21/49 ,  G01N2021/651 ,  G01N2201/065 ,  G01N2201/08

摘要： This invention relates to a light delivery and collection device for measuring Raman scattering from a large area of a sample. The light delivery and collection device comprises a reflective cavity made of a material or having a surface coating with high reflectivity to the excitation light and the Raman scattered light. The reflective cavity has two apertures. The first aperture is configured to receive the excitation light which then projects onto the second aperture. The second aperture is configured to be applied close to the sample such that the reflective cavity substantially forms an enclosure covering a large area of the sample. The excitation light produces Raman scattered light from the covered area of the sample. The reflective cavity reflects any excitation light and Raman light scattered from the sample unless the excitation light and the Raman scattered light either emit from the first aperture to be measured with a spectrometer device, or are re-scattered by the sample at the second aperture. The multi-reflection of the reflective cavity greatly improves the excitation efficiency of Raman scattering from the sample and in the meantime enhances its collection efficiency. In addition, it also causes more excitation light to penetrate into a diffusely scattering sample and allows efficient collection of the Raman scattered light generated thereof, hence enabling sub-surface Raman scattering measurement.