Patent ID: 9594026
Date: 2017-03-14
CPC Classifications: G01N

Claim:
1. An apparatus for measuring concentration of hemoglobin in blood using a photothermal effect, the apparatus comprising: a reference light source radiating a reference beam; a photothermal light source radiating a photothermal beam from which the photothermal effect is generated; a cuvette accommodating a collected blood sample thereinto and having first and second reflection layers; and a concentration operator loaded on and executed by a hardware processor and calculating the concentration of hemoglobin by using the phase changes of interference signals generated from the incidence of the reference beam radiated from the reference light source onto the first and second reflection layers of the cuvette unit as the photothermal beam radiated from the photothermal light source is incident onto the cuvette and absorbed by hemoglobin to generate the photothermal effect through the emission of heat, wherein the concentration operator reads the reflected interference signals through a spectrometer, reads absolute values of complex numbers obtained through inverse Fourier transform of the interference signals, finds the path-length having the greatest absolute value, and obtains the phase in the signal of the path-length.