Optical system for triglyceride inspection
An optical system for triglyceride inspection is disclosed. The optical system includes a first light source, a second light source, an optical sensor, and an electronic device, wherein the electronic device is configured to: control the first light source to emit white light onto a skin of a subject, causing a first scattered light to be produced from the skin; control the second light source to emit detection light onto the skin, causing a second scattered light to be produced from the skin; collect the first and second scattered lights; calculate an estimated reflectance, a calibration coefficient, and an estimated internal turbidity based on the first and second scattered lights; and employ the calibration coefficient to calibrate the estimated internal turbidity so as to obtain a measured internal turbidity. Simply put, the optical system can correct optical measurement errors caused by variations in skin tone.
1 . An optical system for triglyceride inspection, comprising:
an optical assembly ( 11 ), being integrated into a toilet seat ( 21 ), and comprising a first light source ( 111 ), a second light source ( 112 ) and an optical sensor ( 113 ); and
an electronic device ( 12 ), being coupled to the optical assembly ( 11 ), and comprises a processor ( 120 ), a memory ( 121 ) and a display ( 122 );
wherein the memory ( 121 ) is configured to store instructions, and the processor ( 120 ) is configured to execute the instructions to:
radiate, by enabling the first light source ( 111 ), a white light onto a skin of a subject, thereby causing a first scattered light to be produced from the skin;
collect, by enabling the optical sensor ( 113 ), the first scattered light;
calculate, based on the first scattered light and the white light, an estimated reflectance;
calculate, by utilizing a first mathematical expression: C=Counts white light/Counts baseline, a calibration coefficient; wherein Counts white light is the estimated reflectance, and Counts_baseline represents a reference reflectance;
radiate, by enabling the second light source ( 112 ), a detection light onto the skin of the subject, thereby causing a second scattered light to be produced from the skin;
collect, by enabling the optical sensor ( 113 ), the second scattered light;
calculate, based on the second scattered light and the detection light, an estimated internal turbidity;
calculate, by utilizing a second mathematical expression: Y′=Y/C, a measured internal turbidity; wherein Y is the estimated internal turbidity, and C is the calibration coefficient; and
show, by driving the display ( 122 ), the measured internal turbidity.
2 . The optical system for triglyceride inspection of claim 1 , wherein the detection light is a near-infrared light.
3 . The optical system for triglyceride inspection of claim 2 , wherein when the skin is white or bright, the calibration coefficient is greater than 1, thereby leading the measured internal turbidity to be less than the estimated internal turbidity.
4 . The optical system for triglyceride inspection of claim 3 , wherein when the skin is dark, the calibration coefficient is less than 1, thereby leading the measured internal turbidity to be greater than the estimated internal turbidity.
5 . The optical system for triglyceride inspection of claim 4 , wherein the detection light has a wavelength in a range between 700 and 2500 nm.
6 . The optical system for triglyceride inspection of claim 4 , wherein the detection light has a wavelength in a range between 700 and 1100 nm.
7 . The optical system for triglyceride inspection of claim 1 , wherein the detection light is a green light, a red light, or a mid-infrared light.
8 . The optical system for triglyceride inspection of claim 1 , wherein the processor ( 120 ) is further configured to transmit the measured internal turbidity to a user-end electronic device that is selected from a group consisting of smartphone, tablet computer, smartwatch, smart bracelet, door phone, desktop computer, laptop computer, all-in-one computer, and server computer, and wherein the electronic device is configured to be integrated in a smart toilet control box.
9 . A toilet comprising the optical system for triglyceride inspection of claim 1 .