Patent ID: 11879777
Assignee: THE TEXAS A&M UNIVERSITY SYSTEM
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method comprising:
using a handheld device comprising a laser, collection optics, and a diffraction grating contained within a housing,
illuminating a sample along a first optical axis with light emitted by the laser,
capturing light Raman-scattered off the sample along a second optical axis with the collection optics, wherein the second optical axis is perpendicular to the first optical axis, and
spectrally dispersing and diffracting the captured Raman-scattered light along a third optical axis with the diffraction grating to create a Raman spectrum; and
recording the Raman spectrum with a camera of a cell phone placed along the third optical axis, the camera comprising an objective lens and an image sensor.