| 摘要 |
PURPOSE: An apparatus for measuring oxygen saturation is provided to improve the reliability of a measured oxygen saturation value by irradiating an aspheric wave with the same direction to an infrared ray and a red line. CONSTITUTION: Optical irradiation modules(100A,100B) transmit light in a polarizing filter for irradiation and irradiates the light to the specific area of a body. Photodetection modules(200A, 200B) transmit the light, which transmits the specific area of the body, to a polarizing filter for detection and changes the light into an electric signal. An extraction module(300) extracts the direct current and the alternating current of the electric signal which is converted in the photodetection modules. An amplification module(400) amplifies the alternating current of the extracted electric signal using an amplifier. An oxygen saturation measurement module(600) extracts oxygen saturation using the direct current component and the amplified alternating current of a separated electric signal. |
