- 专利标题: Methods and devices for standoff differential Raman spectroscopy with increased eye safety and decreased risk of explosion
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申请号: US16351129申请日: 2019-03-12
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公开(公告)号: US10527495B2公开(公告)日: 2020-01-07
- 发明人: Daryoosh Vakhshoori , Romain Blanchard , Peili Chen , Masud Azimi , Tobias Mansuripur , Kalyani Krishnamurthy , Arran M. Bibby , Fred R. Huettig, III , Gokhan Ulu , Greg Vander Rhodes
- 申请人: Daryoosh Vakhshoori , Romain Blanchard , Peili Chen , Masud Azimi , Tobias Mansuripur , Kalyani Krishnamurthy , Arran M. Bibby , Fred R. Huettig, III , Gokhan Ulu , Greg Vander Rhodes
- 申请人地址: US MA Cambridge
- 专利权人: Pendar Technologies, LLC
- 当前专利权人: Pendar Technologies, LLC
- 当前专利权人地址: US MA Cambridge
- 代理机构: Smith Baluch LLP
- 主分类号: G01J3/44
- IPC分类号: G01J3/44 ; G01K11/32 ; G01J3/02 ; G01J3/06
摘要:
A compact, portable Raman spectrometer makes fast, sensitive standoff measurements at little to no risk of eye injury or igniting the materials being probed. This spectrometer uses differential Raman spectroscopy and ambient light measurements to measure point-and-shoot Raman signatures of dark or highly fluorescent materials at distances of 1 cm to 10 m or more. It scans the Raman pump beam(s) across the sample to reduce the risk of unduly heating or igniting the sample. Beam scanning also transforms the spectrometer into an instrument with a lower effective safety classification, reducing the risk of eye injury. The spectrometer's long standoff range automatic focusing make it easier to identify chemicals through clear and translucent obstacles, such as flow tubes, windows, and containers. And the spectrometer's components are light and small enough to be packaged in a handheld housing or housing suitable for a small robot to carry.