Pendar Technologies, LLC

Ahura Scientific Inc.

Thermo Scientific Portable Analytical Instruments Inc.

Arran M Bibby

Daryoosh Vakhshoori

Masud Azimi

Peili Chen

Romain Blanchard

Tobias Mansuripur

Fred R Huettig, Iii

Gokhan Ulu

Greg Vander Rhodes

Kalyani Krishnamurthy

Peidong Wang

Kevin J Knopp

Christopher D Brown

Stephen McLaughlin

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.

Methods and devices for standoff differential Raman spectroscopy with increased eye safety and decreased risk of explosion

Methods and devices for standoff differential Raman spectroscopy decreased risk of explosion

We disclose apparatus that includes: (a) an enclosure including an aperture; (b) a prism mounted in the enclosure so that a surface of the prism is exposed through the aperture; (c) an optical assembly contained within the enclosure, the optical assembly including a radiation source and a radiation detector, the source being configured to direct radiation towards the prism and the detector being configured to detect radiation from the source reflected from the exposed surface of the prism; and (d) an electronic processor contained within the enclosure, the electronic processor being in communication with the detector. The apparatus can be configured so that, during operation, the electronic processor determines information about a sample placed in contact with the exposed surface of the prism based on radiation reflected from the exposed prism surface while it is in contact with the sample.

Handheld infrared and raman measurement devices and methods

We disclose an apparatus comprising: a hand-portable optical analysis unit including an optical interface; and a device configured to receive and releasably engage the hand-portable optical analysis unit. The device comprises: a housing; a sample unit in the housing; and a resilient member configured to bias the sample unit and the hand-portable analysis unit towards each other when the hand-portable optical analysis unit is received in the device to compress a sample disposed between the sample unit and the optical interface of the optical analysis unit. Methods of analyzing samples are also disclosed.

Preparing samples for optical measurement

Handheld infrared and Raman measurement devices and methods

Growing community of inventors

Savannah, GA, United States of America

Arran M Bibby