Skin water content detection system and method based on light detection technology

Abstract

The invention discloses a skin water content detection system and method based on a light detection technology. The skin water content detection system comprises an illumination module, an illumination end polarization modulation module, a detection end polarization modulation module and a detection module; the illumination module comprises a light source and a collimating lens; the illumination end polarization modulation module comprises a fixed polaroid; the detection end polarization modulation module comprises a fixed polaroid; the detection module comprises an imaging lens and a camera; and a certain included angle is formed between the illumination end polarization modulation module and the detection end polarization modulation module, so that the detection end is prevented from receiving specular reflection light of the skin surface. According to the system and the method, the water content information of a sample can be extracted more accurately, and the water content information can be compatible with a near-infrared skin water content detection system.

Description

technical field [0001] The invention relates to the field of light detection technology, in particular to a skin water content detection system and method based on light detection technology. Background technique [0002] The skin plays a vital role in many physiological processes as its water holding capacity and lipid content play an important role in controlling the level of transepidermal water loss. Water content is one of the important factors that affect the physiological function of the skin. Monitoring the skin water content helps to understand the physiological state of the skin and evaluate the health status of the skin, which is of great significance for protecting the skin. [0003] Currently the most popular technology for measuring skin moisture content is developed based on the electrophysiological properties of the skin. It indirectly reflects the moisture content by measuring parameters such as electrical impedance, conductance or capacitance of the skin. S...

AI Technical Summary

Problems solved by technology

However, there are also some problems in the skin moisture content measurement technology based on skin electrophysiological properties. The skin moisture content detection system must contact the skin. Since the electrodes in contact with the skin are usually rigid, the area they contact with the skin depends on the applied pressure, and Conductometric measurements are also affected by micro-topographical changes in the skin surface, therefore, the measurement results of such methods are not stable, and the measurement results can be significantly affected by personal usage habits

[0004] At present, there is an invention patent with publication number CN109222913A which is similar to the technical solution of the present application, which discloses a device and method for measuring skin moisture content using infrared spectroscopy. The method belongs to the technical field of infrared spectroscopy and is a rapid , non-contact and non-invasive technology, this method is based on the principle that water in the stratum corneum can absorb infrared rays, and the skin moisture content is measured through the absorption spectrum of infrared rays. This method can solve the problem that the electrical method of measuring skin moisture content is susceptible to external interference , but the disadvantage is that it is expensive

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