Spectroscopic system and method therefor

Patent metadata

Field	Value
Publication number	US-11800981-B2
Application number	US-202016949466-A
Country	US
Kind code	B2
Filing date	Oct 30, 2020
Priority date	Oct 10, 2017
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

A spectroscopic system may include: a probe having a probe tip and an optical coupler, the optical coupler including an emitting fiber group and first and second receiving fiber groups, each fiber group having a first end and a second end, wherein the first ends of the fiber groups are formed into a bundle and optically exposed through the probe tip; a light source optically coupled to the second end of the emitting fiber group, the light source emitting light in at least a first waveband and a second waveband, the second waveband being different from the first waveband; a first spectrometer optically coupled to the second end of the first receiving fiber group and configured to process light in the first waveband; and a second spectrometer optically coupled to the second end of the second receiving fiber group and configured to process light in the second waveband.

First claim

What is claimed is:

1. A spectroscopic system comprising:
a probe comprising a probe tip;
a light source;
an optical coupler optically coupled to the light source and configured to receive light from the light source and guide the light towards the probe tip whereby the light is emitted in at least a first waveband and a second waveband, the second waveband being different from the first waveband;
a first spectrometer optically coupled to the optical coupler and configured to process light in the first waveband;
a second spectrometer optically coupled to the optical coupler and configured to process light in the second waveband; and
wherein the light source is optically positioned to emit the light at a center of the probe tip, and wherein the first and second spectrometers are optically positioned to receive and process light in the first and second wavebands, respectively, at a radial distance from the center of the probe tip;
wherein the optical coupler comprises a bundle of fibers comprising an emitting fiber group, a first receiving fiber group, and a second receiving fiber group, the first and second receiving fiber groups comprising a plurality of fibers; and
wherein the emitting fiber group comprise a single fiber positioned at a center of the bundle of fibers.

2. The spectroscopic system according to claim 1 wherein the first spectrometer is optically positioned to receive and process light in the first waveband at a first radial distance from the center of the probe tip and the second spectrometer is optically positioned to receive and process light in the second waveband at a second radial distance from the center of the probe tip, the first and second radial distances being different.

3. The spectroscopic system according to claim 1 wherein the first and second spectrometers are optically positioned to receive and process light in the first and second wavebands, respectively, at the same radial distance from the center of the probe tip.

4. The spectroscopic system according to claim 1 wherein the first spectrometer comprises a first scanning spectrometer and the second spectrometer comprises a second scanning spectrometer.

5. The spectroscopic system according to claim 1 wherein the first waveband is in one of the near infrared spectrum and the visible spectrum and the second waveband is in the short wavelength infrared spectrum.

6. The spectroscopic system of according to claim 1 wherein the first and second wavebands are in the infrared spectrum.

7. The spectroscopic system according to claim 1 wherein the first waveband is in the visible spectrum and the second waveband is in the infrared spectrum.

8. The spectroscopic system according to claim 1 wherein the light source comprises a broadband light source.

Assignees

• Colgate Palmolive Co

Inventors

• Peru Deborah Ann
• Subhash Hrebesh Molly

Classifications

• A61B5/0075 Primary

  by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy (A61B5/0071 takes precedence) · CPC title

• A61B5/0062

  Arrangements for scanning · CPC title

• A61B5/0088

  for oral or dental tissue · CPC title

• A61B5/14546

  for measuring analytes not otherwise provided for, e.g. ions, cytochromes · CPC title

• A61B5/14551

  for measuring blood gases · CPC title