US 12,484,813 B2
Raman spectroscopy apparatus for blood glucose measurement comprising linear variable filter
Miyeon Jue, Seoul (KR); Young Kyu Kim, Seoul (KR); and Aram Hong, Seoul (KR)
Assigned to Apollon Inc., Seoul (KR)
Filed by Apollon Inc., Seoul (KR)
Filed on Jan. 31, 2024, as Appl. No. 18/427,955.
Application 18/427,955 is a continuation of application No. 18/455,492, filed on Aug. 24, 2023, granted, now 11,986,295.
Claims priority of application No. 10-2023-0069417 (KR), filed on May 30, 2023.
Prior Publication US 2024/0398283 A1, Dec. 5, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/1455 (2006.01); A61B 5/00 (2006.01); A61B 5/145 (2006.01); G01N 21/65 (2006.01); G01N 33/49 (2006.01)
CPC A61B 5/14532 (2013.01) [A61B 5/0002 (2013.01); A61B 5/1455 (2013.01); G01N 21/65 (2013.01); G01N 33/49 (2013.01); A61B 5/6801 (2013.01); G01N 2201/061 (2013.01); G01N 2201/127 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An apparatus for measuring blood glucose level, comprising:
a light source configured to irradiate light to a subject;
a linear variable filter that filters the light reflected and scattered by the subject, wherein the linear variable filter is configured such that different areas thereof pass different wavelength components of light; and
a light receiver configured to receive the light transmitted through the linear variable filter and to generate electrical signals representative of a Raman spectrum of the light reflected and scattered from the subject; and
a processor configured to extract information on the blood glucose level of the subject based on the Raman spectrum,
wherein the linear variable filter includes a 915 nm filter area to allow a 1125 cm−1 peak in the Raman spectrum to pass and the processor configured to extract the information on the blood glucose level based on each of at least three areas of peaks (i) between 1089 cm−1 and 1160 cm−1, (ii) between 1115 cm−1 and 1140 cm−1, and (iii) between 1120 cm−1 and 1130 cm−1.