CN-121987135-A - Physiological characteristic measuring apparatus

Abstract

A physiological characteristic measuring device is adapted to be disposed in front of an eye. The physiological characteristic measuring device comprises a light source module, a sensing module and a processing unit. The light source module is configured to provide an incident ray polarization toward the eye, the incident ray polarization having a first linear polarization. When incident rays are polarized and incident on the eye, the sensing module is used for sensing light to be detected from the eye. The processing unit is connected with the sensing module. The processing unit is used for providing a light intensity ratio, wherein the light intensity ratio is a ratio of the light intensity of first linear polarization of light to be detected and the light intensity of second linear polarization of light to be detected, the first linear polarization has second linear polarization, the second linear polarization has first linear polarization, and the second linear polarization is perpendicular to the first linear polarization. The processing unit provides physiological characteristic measurements based on an arctangent function of the light intensity ratio.

Inventors

• LIN ZHIRU

Assignees

• 立景创新科技股份有限公司

Dates

Publication Date

20260508

Application Date

20241030

Claims (16)

1. 1. A physiological characteristic measurement apparatus adapted to be disposed in front of an eye, comprising: A light source module configured to provide an incident ray polarization toward the eye, the incident ray polarization having a first linear polarization; a sensing module for sensing light to be measured from the eye when the incident ray is polarized and incident on the eye, and The processing unit is connected with the sensing module, wherein the processing unit is used for providing a light intensity ratio, the light intensity ratio is a ratio of the light intensity of a first linear polarization of the light to be detected and the light intensity of a second linear polarization of the light to be detected, the first linear polarization has a second linear polarization, the second linear polarization has the first linear polarization, the second linear polarization is perpendicular to the first linear polarization, and the first linear polarization is perpendicular to the second linear polarization The processing unit provides a physiological characteristic measurement based on an arctangent function of the light intensity ratio.
2. 2. The physiological condition measuring device of claim 1, wherein said incident line polarization and said light to be measured define an optical plane, said first linear polarization being parallel to said optical plane and said second linear polarization being perpendicular to said optical plane.
3. 3. The physiological condition measuring device of claim 1, wherein said incident line polarization and said light under test define an optical plane, said first linear polarization being perpendicular to said optical plane and said second linear polarization being parallel to said optical plane.
4. 4. The physiological characteristic measurement apparatus according to claim 1, wherein said light source module includes a laser light source and a first linear polarizer, said laser light source providing laser light to be incident on said first linear polarizer.
5. 5. The physiological characteristic measurement apparatus according to claim 1, wherein the sensing module includes a spectroscope, a first sensing device and a second sensing device, the spectroscope is disposed on the path of the light to be measured, and the first sensing device and the second sensing device are connected to the processing unit.
6. 6. The physiological characteristic measurement apparatus according to claim 1, further comprising an image pickup device connected to said processing unit, said incident-ray polarization and said light to be measured defining an optical plane, said image pickup device being for picking up an image of said eye, and an optical axis of said image pickup device being located on said optical plane.
7. 7. The physiological characteristic measurement apparatus according to claim 6, further comprising a moving mechanism connected to the processing unit, the processing unit controlling the moving mechanism to move the light source module, the sensing module, and the image pickup device according to an image provided by the image pickup device.
8. 8. The physiological characteristic measurement apparatus according to claim 6, wherein said light source module includes a laser light source and a first linear polarizer, said laser light source providing laser light, said laser light being incident on said first linear polarizer to generate said incident ray polarization, said incident ray polarization having an angle with said optical axis of said image pickup device, said angle falling within a range of 0 degrees to 90 degrees.
9. 9. The physiological characteristic measurement apparatus according to claim 1, wherein a wavelength of said incident ray polarized light falls within a range of 460nm to 940 nm.
10. 10. The physiological characteristic measurement apparatus according to claim 1, wherein said incident ray polarized light and said light to be measured overlap.
11. 11. The physiological characteristic measurement apparatus according to claim 1, further comprising at least one beam splitter through which both said incident beam polarization and said light to be measured pass.
12. 12. The physiological characteristic measurement apparatus of claim 11, wherein the number of said at least one beam splitter is 2.
13. 13. The physiological characteristic measurement apparatus according to claim 6, wherein said incident beam polarized light and said light to be measured overlap said optical axis of said image pickup device.
14. 14. A physiological characteristic measurement apparatus adapted to be disposed in front of an eye, comprising: A light source module including a light source for providing incident light toward the eye, the incident light including first incident light during a first period of time and second incident light during a second period of time, wherein the first linear polarizer is not in the path of the incident light during the first period of time and the first linear polarizer is in the path of the incident light during the second period of time; a sensing module including a second linear polarizer, wherein when the incident light is incident on the eye, the sensing module is used for sensing the light to be detected from the eye to generate the light intensity of the light to be detected, the second linear polarizer is positioned on the path of the light to be detected, and the absorption axis of the first linear polarizer is perpendicular to the absorption axis of the second linear polarizer, and The processing unit is connected with the sensing module and is used for providing a light intensity ratio, wherein the light intensity ratio is the ratio of the light intensity of the light to be detected in the second period to the light intensity of the light to be detected in the first period, and the light intensity ratio is the ratio of the light intensity of the light to be detected in the first period The processing unit provides a physiological characteristic measurement based on an arcsine function of the light intensity ratio.
15. 15. The physiological condition measuring device of claim 14, wherein said incident light and said light to be measured define an optical plane, said absorption axis of said first linear polarizer is parallel to said optical plane, and said absorption axis of said second linear polarizer is perpendicular to said optical plane.
16. 16. The physiological condition measuring device of claim 14, wherein said incident light and said light to be measured define an optical plane, said absorption axis of said first linear polarizer is perpendicular to said optical plane, and said absorption axis of said second linear polarizer is parallel to said optical plane.

Description

Physiological characteristic measuring apparatus Technical Field The present invention relates to an optical measurement device, and more particularly, to a physiological characteristic measurement device. Background Diabetes is a global disease, but the major blood glucose machines (Blood glucose monitor, BGM) on the market today all require blood collection, increasing the discomfort of diabetics. In recent years, continuous blood glucose monitors (Continuous glucose monitor, CGM) have been developed which implant a soft-tipped glucose oxidase sensor subcutaneously to measure subcutaneous blood glucose values for continuous detection purposes. On the other hand, optical blood glucose measuring devices often employ fourier transform infrared (Fourier transforminfrared spectroscopy) spectroscopy, raman spectroscopy (Raman spectroscopy) spectroscopy, and near-infrared/mid-range infrared spectroscopy (NEAR INFRARED/MIDDLE INFRARED spectrum) analysis. However, blood collection is still necessary. Moreover, the optical monitors are not easy to miniaturize and difficult to carry about. Disclosure of Invention The invention provides a physiological characteristic measuring device which does not need to collect blood and is convenient to carry. According to an embodiment of the present invention, there is provided a physiological characteristic measuring device adapted to be disposed in front of an eye. The physiological characteristic measuring device comprises a light source module, a sensing module and a processing unit. The light source module is configured to provide an incident ray polarization toward the eye, the incident ray polarization having a first linear polarization. When incident rays are polarized and incident on the eye, the sensing module is used for sensing light to be detected from the eye. The processing unit is connected with the sensing module. The processing unit is used for providing a light intensity ratio, wherein the light intensity ratio is a ratio of the light intensity of first linear polarization of light to be detected and the light intensity of second linear polarization of light to be detected, the first linear polarization has second linear polarization, the second linear polarization has first linear polarization, and the second linear polarization is perpendicular to the first linear polarization. The processing unit provides physiological characteristic measurements based on an arctangent function of the light intensity ratio. According to another embodiment of the present invention, a physiological characteristic measurement apparatus is provided that is adapted to be disposed in front of an eye. The physiological characteristic measuring device comprises a light source module, a sensing module and a processing unit. The light source module includes a light source and a first linear polarizer. The light source is for providing incident light toward the eye, the incident light including a first incident light during a first period of time and a second incident light during a second period of time. The first polarizer is not in the path of the incident light during the first period, and the first polarizer is in the path of the incident light during the second period. The sensing module includes a second linear polarizer. When the incident light enters the eye, the sensing module is used for sensing the light to be detected from the eye so as to generate the light intensity of the light to be detected. The second linear polarizer is positioned on the path of the light to be measured, and the absorption axis of the first linear polarizer is perpendicular to the absorption axis of the second linear polarizer. The processing unit is connected with the sensing module. The processing unit is used for providing a light intensity ratio, wherein the light intensity ratio is the ratio of the light intensity of the light to be detected in the second period to the light intensity of the light to be detected in the first period. The processing unit provides physiological characteristic measurements based on an arcsine function of the light intensity ratio. Based on the above, the physiological characteristic measuring apparatus provided by the embodiment of the invention uses the optical rotation of glucose and uses polarized light to measure the glucose concentration in aqueous humor of eyes so as to obtain the blood glucose concentration of a subject. Compared with other invasive measuring equipment, the physiological characteristic measuring equipment provided by the embodiment of the invention does not need to collect blood and is convenient to carry. In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. Drawings Fig. 1 shows a schematic diagram of the construction of a human eye; FIG. 2A shows a schematic diagram of a physiological characteristic measurement apparatus, accor