Patent ID: 11933720
Assignee: ESSENLIX CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  G | IPC G

Claim 0:
1. An apparatus for measuring a light absorption of a sample for each wavelength in a light with two difference wavelengths, the apparatus comprising:
a sample holder that has a first plate, a second plate, a light guiding spacer (LGS), at least a sampling region, and at least a reference region, wherein the two plates sandwich the sample to be analyzed into a thin layer, wherein the sample contains or is suspected of containing an analyte that absorbs the light,
a light source providing a light that has a first wavelength, Xi, mixed with a second wavelength, λ2,
a color camera for measuring the light that is transmitted through the sample in the sample holder, wherein the transmitted light has an intensity for the first wavelength, Iλ1, mixed with an intensity for the second wavelength, Iλ2, wherein the camera comprises a first color channel, A, and a second color channel, B; each of the first and second color channels measures the light to generate a signal IA and IB respectively;
a non-transitory computer readable medium storing an algorithm that determines (i) the intensity of Iλ1 and Iλ2, respectively, using the signal IA and IB and a predetermined channel cross talking matrix, and (ii) the light absorption of a sample for each of the wavelengths;
wherein the sampling region is a region that the light can go through, in sequence, the first plate, the sample, and the second plate, wherein the sampling region does not have the LGS;
wherein the reference region is a region that the light transmits through, in sequence, the first plate, the light-guiding spacer, and the second plate, without going through the sample.