Identifying substances stored in containers utilizing a portable Raman probe
AssigneeWasatch Photonics, Inc.
InventorsDavid John Creasey, Elroy Louis Pearson, Jonathan Mark Faircloth, Dieter Bingemann
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a portable Raman probe that uses axicon lenses (“axicons”), grating axicons (“graxicons”), and other optical elements to collect spectra from substances behind non-opaque barriers using off-axis techniques. The portable Raman probe can also include a Raman spectrometer to analyze the collected spectra, and a spectra refinement machine-learning model to generate refined spectra from raw or noisy collected samples.
Claims20
A portable Raman probe comprising:
- a light source that generates an emitted light at a first wavelength range;
- a ring of light within the portable Raman probe based on the emitted light;
- a focusing element surrounding a collection lens, wherein the focusing element accepts the ring of light and directs the ring of light out of the portable Raman probe toward a focal point associated with a substance that is beyond a non-opaque barrier;
- and
- the collection lens that receives excited light at a second wavelength range refracted off the substance beyond the non-opaque barrier.
A portable Raman probe comprising:
- a light source that emits a light at a first wavelength range;
- an axicon that separates the light into a ring of light;
- and
- a focusing element surrounding a collection lens, wherein:
- the focusing element receives the ring of light and directs the ring of light out of the portable Raman probe;
- the focusing element encircles the collection lens;
- and
- the collection lens receives excited light at a second wavelength range.
A method for utilizing a spectrometer to detect substances stored in non-opaque containers, comprising:
- emitting a first wavelength range of light via a grating axicon of a portable spectrometer probe through a non-opaque barrier and onto a substance beyond the non-opaque barrier;
- receiving a second wavelength range of light at a collection lens of the portable spectrometer probe, wherein the collection lens is encircled by the grating axicon;
- passing the second wavelength range of light through a grating within the portable spectrometer probe that diffracts the second wavelength range of light onto a detector;
- and
- providing processing results based on the second wavelength range of light collected at the detector to reveal a composition of the substance beyond the non-opaque barrier.
Dependencies are inferred from the claim text.